MESON Chess Problem Database
Problem Display
PID: 406 (1K6/8/1RQ3bp/6rk/6p1/4N2q/4p3/4B2R w - - 0 1)
Warton, Joseph John
Warton, Thomas Joseph
The Observer, 1942
(First published on Sun May 31 1942)
#2
6 + 7
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxh1
- 2.Qxh1#
- 1...Qh2+
- 2.Rxh2#
- 1...Qh4
- 2.Rxh4#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Be4
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...g3
- 2.Rxh3#
- 1...Qxh1
- Tries
- 1.Ka7?
- 1...Qxh1
- 2.Qxh1#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Qh2
- 2.Rxh2#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Be4
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Ra5+!
- 1...Qxh1
- 1.Kb7?
- 1...Qxh1
- 2.Qxh1#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Qh2
- 2.Rxh2#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Be4!
- 1...Qxh1
- 1.Kc7?
- 1...Qh2+
- 2.Rxh2#
- 1...Qxh1
- 2.Qxh1#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Be4
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Rc5!
- 1...Qh2+
- 1.Sc2?
- 1...Qh2+
- 2.Rxh2#
- 1...Qxh1
- 2.Qxh1#
- 1...Bxc2
- 2.Qxh6#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...g3!
- 1...Qh2+
- 1.Sg2?
- threat
- 2.Sf4#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3!
- threat
- 1.Sc4?
- 1...Qh2+
- 2.Rxh2#
- 1...Qxh1
- 2.Qxh1#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...g3!
- 1...Qh2+
- 1.Sd5?
- threat
- 2.Sf4#
- 2.Sf6#
- 1...Qh2+
- 2.Sf4#
- 2.Rxh2#
- 1...Rxd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...Be4
- 2.Sf4#
- 2.Qxh6#
- 1...Bb1
- 2.Sf4#
- 2.Qxh6#
- 1...Bc2
- 2.Sf4#
- 2.Qxh6#
- 1...Bd3
- 2.Sf4#
- 2.Qxh6#
- 1...Bf5
- 2.Sf4#
- 2.Qxh6#
- 1...Bf7
- 2.Sf4#
- 2.Qxh6#
- 1...Bh7
- 2.Sf4#
- 2.Qxh6#
- 1...Be8
- 2.Sf4#
- 2.Qxh6#
- 1...g3!
- threat
- 1.Sf5?
- threat
- 2.Sg7#
- 1...Qh2+
- 2.Rxh2#
- 1...Rxf5
- 2.Qxg6#
- 1...Bxf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...g3!
- threat
- 1.Rh2?
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Qxh2+!
- 1...Ra5
- 1.Ra6?
- 1...Qh2+
- 2.Rxh2#
- 1...Qxh1
- 2.Qxh1#
- 1...Ra5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Rb5+!
- 1...Qh2+
- 1.Qd6?
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 1...Be4
- 2.Qxh6#
- 1...Qh2
- 2.Rxh2#
- 2.Qxh2#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Qxh1!
- 1...Ra5
- 1.Qe6?
- 1...Qh2+
- 2.Rxh2#
- 1...Ra5
- 2.Qxg4#
- 2.Qxg6#
- 1...Rb5
- 2.Qxg4#
- 2.Qxg6#
- 1...Rc5
- 2.Qxg4#
- 2.Qxg6#
- 1...Rd5
- 2.Qxg4#
- 2.Qxg6#
- 1...Re5
- 2.Qxg4#
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...g3
- 2.Rxh3#
- 2.Qxh3#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Qxh1!
- 1...Qh2+
- 1.Qf6?
- 1...Qh2+
- 2.Rxh2#
- 1...g3
- 2.Rxh3#
- 1...Be4
- 2.Qxh6#
- 1...Qh4
- 2.Rxh4#
- 1...Ra5
- 2.Qxg6#
- 1...Rb5
- 2.Qxg6#
- 1...Rc5
- 2.Qxg6#
- 1...Rd5
- 2.Qxg6#
- 1...Re5
- 2.Qxg6#
- 1...Rf5
- 2.Qxg6#
- 1...Bb1
- 2.Qxh6#
- 1...Bc2
- 2.Qxh6#
- 1...Bd3
- 2.Qxh6#
- 1...Bf5
- 2.Qxh6#
- 1...Bf7
- 2.Qxh6#
- 1...Bh7
- 2.Qxh6#
- 1...Be8
- 2.Qxh6#
- 1...Qxh1!
- 1...Qh2+
- 1.Ka7?
- Keys
- 1.Qf3!
- threat
- 2.Rxh3#
- 1...Qh2+
- 2.Rxh2#
- 1...Qxh1
- 2.Qxh1#
- 1...Ra5
- 2.Qxg4#
- 1...Rb5
- 2.Qxg4#
- 1...Rc5
- 2.Qxg4#
- 1...Rd5
- 2.Qxg4#
- 1...Re5
- 2.Qxg4#
- 1...Rf5
- 2.Qxg4#
- 1...Qh4
- 2.Rxh4#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 6
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);OGATE::R1(B),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- B(f);OGATE::QAR1(E),XP(g)
- P(c);N_GUARD::R(B),XQ(b)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- Q(b);OGATEB::R(B),XQ(b)
- Q(b);OGATE::R1(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Refutation
- R(d);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- Q(b);N_SPINQ(b),OGATE,P_PINQ(E),XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- Q(b);OGATEB::R(B),XQ(b)
- Q(b);OGATE::R1(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Refutation
- B(f);P_PINQ(E)
- Try
- K(F);S_FLIGHT
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- Q(b);OGATE::R1(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Refutation
- R(d);P_PINQ(E)
- Try
- S(C);
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- B(f);OGATE,XS(C)::QAR1(E),XP(g)
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- P(c);
- Try
- S(C);
- Threat
- S(C)
- Vars
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- Refutation
- P(c);
- Try
- S(C);
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- P(c);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XS(C)::QAB1(E),XB(f)
- R(d);N_GUARD::QAB1(E),XB(f)
- Refutation
- P(c);
- Try
- S(C);
- Threat
- S(C)
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- R(d);N_GUARD,XS(C)::QAB1(E),XB(f)
- B(f);OGATE,XS(C)::QAR1(E),XP(g)
- B(f);OGATE::QAR1(E),XP(g)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XR(B)
- Try
- R(D);
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- R(d);CHECK
- Try
- Q(E);
- Vars
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- P(c);N_GUARD::R(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- Q(b);N_SPINQ(b),XR(B)
- Try
- Q(E);
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- Refutation
- Q(b);N_SPINQ(b),XR(B)
- Try
- Q(E);
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- P(c);N_GUARD::R(B),XQ(b)
- B(f);OGATE::QAR1(E),XP(g)
- Q(b);OGATE::R1(B),XQ(b)
- R(d);N_GUARD::QAB1(E),XB(f)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XB(f)
- Refutation
- Q(b);N_SPINQ(b),XR(B)
- Try
- Actual
- Q(E);P_PINP(c)
- Threat
- R(B),XQ(b)
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XR(B)::QAR(E),XQ(b)
- R(d);N_GUARD::QAB1(E),XP(c)
- R(d);N_GUARD,P_PINR(D)::QAB1(E),XP(c)
- Q(b);OGATE::R1(B),XQ(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).