MESON Chess Problem Database
Problem Display
PID: 180942 (K1B3R1/8/3p2N1/6p1/Rn2Q3/3pB1kb/4p1Pp/4N1n1 w - - 0 1)
Rice, John Michael
3rd Prize=, Problem Observer, 2013
#2
9 + 9
| 136 | Problem Observer | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Bxg2
- 2.Qxg2#
- 1...Bg4
- 2.Qxg4#
- 1...Sf3
- 2.Qxf3#
- 1...g4
- 2.Qf4#
- 1...d5
- 2.Qe5#
- 1...Bxg2
- Tries
- 1.Sh4?
- threat
- 2.Qf4#
- 1...Bxg2
- 2.Rxg5#
- 1...Bg4
- 2.Qxg4#
- 1...g4
- 2.Sf5#
- 1...Sd5!
- threat
- 1.Sf8?
- threat
- 2.Qf4#
- 1...Bxg2
- 2.Rxg5#
- 1...Bg4
- 2.Qxg4#
- 1...Sd5
- 2.Qh4#
- 1...g4!
- threat
- 1.Sh8?
- threat
- 2.Qf4#
- 1...Bxg2
- 2.Rxg5#
- 1...Bg4
- 2.Qxg4#
- 1...Sd5
- 2.Qh4#
- 1...g4!
- threat
- 1.Bf4+?
- 1...gxf4
- 2.Qxf4#
- 1...Kf2!
- 1...gxf4
- 1.Bxg5?
- threat
- 2.Bh4#
- 2.Qf4#
- 2.Qh4#
- 1...Bxg2
- 2.Bh4#
- 2.Qxg2#
- 1...h1Q
- 2.Qf4#
- 1...h1S
- 2.Qf4#
- 1...h1B
- 2.Qf4#
- 1...h1R
- 2.Qf4#
- 1...Bg4
- 2.Bh4#
- 2.Qf4#
- 1...Sf3
- 2.Qxf3#
- 1...Sd5
- 2.Bh4#
- 2.Qh4#
- 1...Kf2!
- threat
- 1.Qd4?
- threat
- 2.Bf2#
- 2.Qxd6#
- 1...Bxc8
- 2.Bf2#
- 1...h1Q
- 2.Qxd6#
- 1...h1S
- 2.Qxd6#
- 1...h1B
- 2.Qxd6#
- 1...h1R
- 2.Qxd6#
- 1...Bf5
- 2.Bf2#
- 1...Be6
- 2.Bf2#
- 1...Bd7
- 2.Bf2#
- 1...Sf3
- 2.Bf2#
- 1...Sd5
- 2.Bf2#
- 1...Sc6
- 2.Bf2#
- 1...d5
- 2.Bf2#
- 2.Qe5#
- 1...Bxg2+!
- threat
- 1.Sh4?
- Keys
- 1.Se7!
- threat
- 2.Qf4#
- 1...Bxg2
- 2.Rxg5#
- 1...Bg4
- 2.Qxg4#
- 1...g4
- 2.Sf5#
- 1...Sd5
- 2.Qh4#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- B(f);OGATE,P_PINQ(E),XP(B)::QAR1(E),XB(f)
- B(f);N_GUARD::QAR1(E),XB(f)
- S(a);N_GUARD::QAR1(E),XS(a)
- P(h);N_GUARD::QAB1(E)
- P(i);N_GUARD::QAB(E)
- Tries
- Try
- S(F);P_PINP(h)
- Threat
- QAB1(E)
- Vars
- B(f);N_GUARD,P_PINQ(E),XP(B)::R(I),XP(h)
- B(f);N_GUARD,N_SPINP(h)::QAR1(E),XB(f)
- P(h);S_CUTB(f)::S(F)
- Refutation
- S(g);
- Try
- S(F);P_PINP(h)
- Threat
- QAB1(E)
- Vars
- B(f);N_GUARD,P_PINQ(E),XP(B)::R(I),XP(h)
- B(f);N_GUARD,N_SPINP(h)::QAR1(E),XB(f)
- S(g);::QAB1(E)
- Refutation
- P(h);
- Try
- S(F);P_PINP(h)
- Threat
- QAB1(E)
- Vars
- B(f);N_GUARD,P_PINQ(E),XP(B)::R(I),XP(h)
- B(f);N_GUARD,N_SPINP(h)::QAR1(E),XB(f)
- S(g);::QAB1(E)
- Refutation
- P(h);
- Try
- B(C);CHECK
- Vars
- P(h);OGATE,XB(C)::QAB1(E),XP(h)
- Refutation
- K(e);S_FLIGHT
- Try
- B(C);XP(h)
- Threat
- DUALS(3)
- Vars
- P(c);::QAB1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(f);XB(H)::B(C)
- P(c);P_PINP(B)::QAB(E),XP(i)
- P(c);::QAB(E),XP(i)
- B(f);::B(C)
- S(a);::B(C)
- S(g);::B(C)
- Refutation
- B(f);CHECK,XP(B)
- Try
- Actual
- S(F);P_PINP(h)
- Threat
- QAB1(E)
- Vars
- B(f);N_GUARD,P_PINQ(E),XP(B)::R(I),XP(h)
- B(f);N_GUARD,N_SPINP(h)::QAR1(E),XB(f)
- P(h);S_CUTB(f)::S(F)
- S(g);::QAB1(E)
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).