MESON Chess Problem Database
Problem Display
PID: 175210 (2n5/8/3p4/5N1P/1K2kr2/1Q6/3P1p2/Bb1B1n2 w - - 0 1)
Chapin, Irving
San Francisco Chronicle, 1902
#2
7 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Rxf5
- 2.Qc4#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sxd2
- 2.Sg3#
- 1...Sh2
- 2.Sg3#
- 1...Se3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Rf3
- Tries
- 1.Ka5?
- 1...Kxf5
- 2.Qd5#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Se3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Rxf5+!
- 1...Kxf5
- 1.Bf6?
- 1...Rxf5
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Se3
- 2.Sg3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Kxf5+!
- 1...Rxf5
- 1.Bg7?
- 1...Rxf5
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Se3
- 2.Sg3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Kxf5+!
- 1...Rxf5
- 1.Bh8?
- 1...Rxf5
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Se3
- 2.Sg3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Kxf5+!
- 1...Rxf5
- 1.Be2?
- threat
- 2.Qe6#
- 1...Rxf5
- 2.Qc4#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Ba2
- 2.Qd3#
- 1...d5
- 2.Qxb1#
- 1...Kxf5+!
- threat
- 1.Bg4?
- threat
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Se3
- 2.Sg3#
- 1...Ba2
- 2.d3#
- 1...Bd3
- 2.Qe6#
- 1...Sb6
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Rxg4!
- threat
- 1.d3+?
- 1...Bxd3
- 2.Qe6#
- 1...Kxf5+!
- 1...Bxd3
- 1.h6?
- 1...Rxf5
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Se3
- 2.Sg3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Kxf5+!
- 1...Rxf5
- 1.Ka5?
- Keys
- 1.Ka3!
- 1...Kxf5
- 2.Qd5#
- 1...Rxf5
- 2.Qc4#
- 1...Sxd2
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Rg4
- 2.Qf3#
- 1...Rh4
- 2.Qf3#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bd3
- 2.Qe6#
- 1...Sh2
- 2.Sg3#
- 1...Se3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sb6
- 2.Sxd6#
- 1...Sa7
- 2.Sxd6#
- 1...Se7
- 2.Sxd6#
- 1...d5
- 2.Qxb1#
- 1...Kxf5
- 1.Ka3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- R(e);SBLOCK,XS(F)::QAR2(D)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- K(d);S_FLIGHT,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- R(e);CHECK,XS(F)
- Try
- B(A);
- Vars
- R(e);SBLOCK,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- S(b);N_GUARD::S(F)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- B(A);
- Vars
- R(e);SBLOCK,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- S(b);N_GUARD::S(F)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- B(A);
- Vars
- R(e);SBLOCK,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- S(b);N_GUARD::S(F)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- B(B);
- Threat
- QAR2(D)
- Vars
- R(e);SBLOCK,XS(F)::QAR2(D)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- B(a);N_GUARD::QAB1(D)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- B(B);
- Threat
- QAR2(D)
- Vars
- S(b);N_GUARD,XP(C)::S(F)
- S(b);N_GUARD::S(F)
- B(a);N_GUARD::P(C)
- B(a);SBLOCK::QAR2(D)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- R(e);XB(B)
- Try
- P(C);CHECK
- Vars
- B(a);SBLOCK,XP(C)::QAR2(D)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- P(G);
- Vars
- R(e);SBLOCK,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- S(b);N_GUARD::S(F)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
- Refutation
- K(d);CHECK,S_FLIGHT,XS(F)
- Try
- Actual
- K(E);S_FLIGHT
- Vars
- K(d);S_FLIGHT,XS(F)::QAR2(D)
- R(e);SBLOCK,XS(F)::QAR2(D)
- S(b);N_GUARD,XP(C)::S(F)
- R(e);N_GUARD,P_PINQ(D)::QAB1(D),XR(e)
- R(e);N_GUARD::QAB1(D)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- B(a);SBLOCK::QAR2(D)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- S(g);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::QAB(D),XB(a)
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).