MESON Chess Problem Database
Problem Display
PID: 214737 (8/1N1Q4/2P3p1/R3p2r/Bb2kp2/5NP1/4P2P/1bB3K1 w - - 0 1)
Rhaun, WH
Detroit Free Press, 1877
#2
11 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxh2
- 2.Sg5#
- 2.Rxe5#
- 1...Rh3
- 2.Sg5#
- 2.Rxe5#
- 1...Rh4
- 2.Sg5#
- 2.Rxe5#
- 1...Rf5
- 2.Qd5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 2.Rxe5#
- 1...Rh7
- 2.Sg5#
- 2.Rxe5#
- 1...Rh8
- 2.Sg5#
- 2.Rxe5#
- 1...Ba2
- 2.Bc2#
- 2.Qd3#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Be1
- 2.Sc5#
- 2.Sd6#
- 1...Bc3
- 2.Sc5#
- 2.Sd6#
- 1...Bxa5
- 2.Sc5#
- 1...Bc5+
- 2.Sxc5#
- 1...Bd6
- 2.Sxd6#
- 1...fxg3
- 2.Qg4#
- 1...g5
- 2.Rxe5#
- 1...Rxh2
- Tries
- 1.Bb3?
- threat
- 2.Bd5#
- 1...Bc5+
- 2.Sxc5#
- 1...Ba2
- 2.Bc2#
- 2.Qd3#
- 1...Bd2!
- threat
- 1.Rc5?
- threat
- 2.Sd6#
- 2.Rc4#
- 1...Bxc5+
- 2.Sxc5#
- 1...Ba2
- 2.Sd6#
- 2.Bc2#
- 2.Qd3#
- 1...Bd3
- 2.Sd6#
- 2.Qxd3#
- 1...Bc3
- 2.Sd6#
- 1...Bd2!
- threat
- 1.g4?
- threat
- 2.Qd5#
- 1...Bc5+
- 2.Sxc5#
- 1...Bxa5
- 2.Sc5#
- 1...Ba2
- 2.Bc2#
- 2.Qd3#
- 1...Bd6
- 2.Sxd6#
- 1...Bd2!
- threat
- 1.c7?
- threat
- 2.Bc6#
- 1...Bc5+
- 2.Sxc5#
- 1...Ba2
- 2.Bc2#
- 2.Qd3#
- 1...Bd2!
- threat
- 1.Bb3?
- Keys
- 1.Bxf4!
- 1...Bc5+
- 2.Sxc5#
- 1...Rxh2
- 2.Sg5#
- 2.Rxe5#
- 1...Bxa5
- 2.Sc5#
- 1...exf4
- 2.Qd4#
- 1...Ba3
- 2.Sd2#
- 1...Rh3
- 2.Sg5#
- 2.Rxe5#
- 1...Rh4
- 2.Sg5#
- 2.Rxe5#
- 1...Rf5
- 2.Qd5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 2.Rxe5#
- 1...Rh7
- 2.Sg5#
- 2.Rxe5#
- 1...Rh8
- 2.Sg5#
- 2.Rxe5#
- 1...Ba2
- 2.Bc2#
- 2.Qd3#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Be1
- 2.Sc5#
- 2.Sd6#
- 1...Bd2
- 2.Sxd2#
- 2.Sc5#
- 2.Sd6#
- 1...Bc3
- 2.Sc5#
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Be7
- 2.Sd2#
- 1...Bf8
- 2.Sd2#
- 1...g5
- 2.Rxe5#
- 1...Bc5+
- 1.Bxf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(f);SBLOCK::QAB1(K)
- R(f);N_GUARD,P_PINP(F)::S(E),XR(f)
- B(a);N_GUARD::B(G),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- B(b);N_GUARD,XR(H)::S(J)
- B(b);CHECK,N_GUARD::S(J),XB(b)
- B(b);N_GUARD::S(J),XB(b)
- P(d);OGATEB,XP(F)::QAR2(K)
- P(g);S_CUTR(f)::R1(H),XP(e)
- Tries
- Try
- B(G);
- Threat
- B(G)
- Vars
- B(b);CHECK,N_GUARD::S(J),XB(b)
- Refutation
- B(b);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,XR(H)::S(J),XB(b)
- B(b);::S(J)
- Refutation
- B(b);
- Try
- P(F);
- Threat
- QAB1(K)
- Vars
- B(b);CHECK,N_GUARD::S(J),XB(b)
- B(b);N_GUARD,XR(H)::S(J)
- B(b);N_GUARD::S(J),XB(b)
- Refutation
- B(b);
- Try
- P(I);
- Threat
- B(G)
- Vars
- B(b);CHECK,N_GUARD::S(J),XB(b)
- Refutation
- B(b);
- Try
- Actual
- B(A);XP(d)
- Vars
- B(b);CHECK,N_GUARD::S(J),XB(b)
- B(b);N_GUARD,XR(H)::S(J)
- P(e);N_GUARD,XB(A)::QAR1(K)
- B(b);N_GUARD::S(E)
- R(f);SBLOCK::QAB1(K)
- R(f);N_GUARD,P_PINP(F)::S(E),XR(f)
- B(a);N_GUARD::B(G),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- B(b);N_GUARD::S(J),XB(b)
- P(g);S_CUTR(f)::R1(H),XP(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).