MESON Chess Problem Database
Problem Display
PID: 407 (8/2Np3p/3P3P/pN2p1K1/Rq2kpB1/3r4/R4P2/BQ3b2 w - - 0 1)
Warton, Joseph John
Warton, Thomas Joseph
The Observer, 1942
(First published on Sun Sep 20 1942)
#2
11 + 9
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bf5#
- 1...Qxa4
- Tries
- 1.Kh4?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Kh5?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Kf6?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Sa3?
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Qb7#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bf5#
- 1...Qxa4!
- 1...Qc4
- 1.Sd4?
- threat
- 2.Bf3#
- 2.Bf5#
- 1...Qxb1
- 2.Bf5#
- 1...Qxd4
- 2.Qb7#
- 1...Be2
- 2.Bf5#
- 2.Rxe2#
- 1...Bg2
- 2.Bf5#
- 2.Re2#
- 1...Bh3
- 2.Bf3#
- 2.Re2#
- 1...f3
- 2.Bxf3#
- 2.Bf5#
- 1...exd4!
- threat
- 1.Bc3?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bf5#
- 1...Qd4!
- 1...Qxa4
- 1.Bh5?
- 1...Qxa4
- 2.Rxa4#
- 1...Bg2
- 2.Re2#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Rb2?
- 1...Bg2
- 2.Re2#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bf5#
- 1...Qxa4!
- 1...Bg2
- 1.Rd2?
- 1...Bg2
- 2.Re2#
- 2.Qxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 2.Qxd3#
- 1...f3
- 2.Bf5#
- 1...Qxa4!
- 1...Bg2
- 1.R2a3?
- 1...Qxa4
- 2.Rxa4#
- 1...Bg2
- 2.Qxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Bh3
- 2.Qxd3#
- 1...f3
- 2.Bf5#
- 1...Be2!
- 1...Qxa4
- 1.Kh4?
- Keys
- 1.Sa7!
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Qb7#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bf5#
- 1...Qxa4
- 1.Sa7!
There are these versions: 140391
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(F)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- Refutation
- P(e);
- Try
- K(H);P-FLIGHT
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD,P_PINB(F)::R(C),XB(a)
- B(a);N_GUARD::R(C)
- Refutation
- P(e);
- Try
- K(H);S_FLIGHT
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- Refutation
- P(e);
- Try
- S(G);
- Vars
- Q(c);OGATE::R(E),XQ(c)
- Q(c);OGATE::QAB(B)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(F)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- S(G);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINR(b),XQ(B)::B(F)
- Q(c);OGATE,P_SPINQ(c),XS(G)::QAB(B)
- Refutation
- P(g);XS(G)
- Try
- B(A);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(F)
- Refutation
- Q(c);
- Try
- B(F);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- B(a);N_GUARD::R(C)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- Refutation
- P(e);
- Try
- R(C);
- Vars
- B(a);N_GUARD::R(C)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- P(e);SBLOCK::B(F)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- R(C);
- Vars
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- B(a);N_GUARD::R(C),XB(a)
- P(e);SBLOCK::B(F)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- R(C);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- B(a);N_GUARD::QAB1(B),XR(b)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(G)
- P(e);SBLOCK::B(F)
- Refutation
- B(a);
- Try
- Actual
- S(G);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);OGATE::QAB(B)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(F)
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).