MESON Chess Problem Database
Problem Display
PID: 222483 (2RN2q1/K2pb2R/2Bk1N2/p1p5/Pr3P2/2rPP3/1B6/3Q4 w - - 0 1)
Whitner, HK
Philadelphia Times, 1883
#2
12 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Se8#
- 1...Qb3
- 2.Se8#
- 1...Qc4
- 2.Se8#
- 1...Qd5
- 2.Se8#
- 1...Qe6
- 2.Se8#
- 1...Qxh7
- 2.Se8#
- 1...Qg1
- 2.Se8#
- 1...Qg2
- 2.Se8#
- 1...Qg3
- 2.Se8#
- 1...Qg4
- 2.Se8#
- 1...Qg5
- 2.Se8#
- 1...Qg7
- 2.Se8#
- 1...Qe8
- 2.Sxe8#
- 1...Rc1
- 2.Be5#
- 1...Rc2
- 2.Be5#
- 1...Ra3
- 2.Be5#
- 1...Rcb3
- 2.Be5#
- 1...Rxd3
- 2.Be5#
- 1...Rcc4
- 2.Be5#
- 1...Rxb2
- 2.Se4#
- 1...Rbb3
- 2.Se4#
- 1...Re4
- 2.Sxe4#
- 1...Rb5
- 2.Se4#
- 1...Rb6
- 2.Se4#
- 1...Rb8
- 2.Se4#
- 1...Bxf6
- 2.Rxd7#
- 1...Bf8
- 2.Se8#
- 2.Rxd7#
- 1...c4
- 2.Se4#
- 1...dxc6
- 2.Rxc6#
- 1...Qa2
- Tries
- 1.Qg4?
- threat
- 2.Qxd7#
- 1...Rb7+
- 2.Sxb7#
- 1...Qxg4
- 2.Se8#
- 1...Rxf4
- 2.Qxf4#
- 1...dxc6
- 2.Rxc6#
- 2.Qd7#
- 1...c4
- 2.Se4#
- 1...Qe6
- 2.Se8#
- 1...Qe8
- 2.Sxe8#
- 1...Qxd8!
- threat
- 1.Qg4?
- Keys
- 1.Qb3!
- 1...Rb7+
- 2.Sxb7#
- 1...Qxb3
- 2.Se8#
- 1...Qxh7
- 2.Se8#
- 2.Qd5#
- 1...Qxd8
- 2.Qd5#
- 1...Rcxb3
- 2.Be5#
- 1...Rxd3
- 2.Be5#
- 1...Rbxb3
- 2.Se4#
- 1...Rxa4
- 2.Sb7#
- 2.Qb8#
- 1...Rxf4
- 2.Qb8#
- 1...Bxf6
- 2.Rxd7#
- 1...Bxd8
- 2.Rxd7#
- 1...dxc6
- 2.Rxc6#
- 1...c4
- 2.Se4#
- 1...Qc4
- 2.Se8#
- 1...Qd5
- 2.Se8#
- 2.Qxd5#
- 1...Qe6
- 2.Se8#
- 1...Qf7
- 2.Sxf7#
- 1...Qg1
- 2.Se8#
- 2.Sf7#
- 2.Qd5#
- 1...Qg2
- 2.Se8#
- 2.Sf7#
- 1...Qg3
- 2.Se8#
- 2.Sf7#
- 2.Qd5#
- 1...Qg4
- 2.Se8#
- 2.Sf7#
- 2.Qd5#
- 1...Qg5
- 2.Se8#
- 2.Sf7#
- 1...Qg6
- 2.Qd5#
- 1...Qg7
- 2.Se8#
- 2.Qd5#
- 1...Qe8
- 2.Sxe8#
- 2.Qd5#
- 1...Qf8
- 2.Qd5#
- 1...Qh8
- 2.Sf7#
- 2.Qd5#
- 1...Rc1
- 2.Be5#
- 1...Rc2
- 2.Be5#
- 1...Rcc4
- 2.Be5#
- 1...Rbc4
- 2.Qb8#
- 1...Rd4
- 2.Sb7#
- 2.Qb8#
- 1...Re4
- 2.Sxe4#
- 2.Sb7#
- 2.Qb8#
- 1...Rb5
- 2.Se4#
- 1...Rb6
- 2.Se4#
- 1...Rb8
- 2.Se4#
- 2.Qxb8#
- 1...Bf8
- 2.Se8#
- 2.Rxd7#
- 1...Rb7+
- 1.Qb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 14
- Sets
- Q(h);N_GUARD::S(H)
- Q(h);N_GUARD,XR(J)::S(H)
- Q(h);N_GUARD::S(H),XQ(h)
- R(a);OGATE::B(B)
- R(a);OGATE,P_SPINR(a),XP(C)::B(B)
- R(b);N_GUARD,XB(B)::S(H)
- R(b);N_GUARD::S(H)
- R(b);N_GUARD::S(H),XR(b)
- B(g);OGATE,XS(H)::R1(J),XP(f)
- P(d);S_CUTR(b)::S(H)
- P(f);OGATE,XB(G)::R1(K),XP(f)
- Tries
- Try
- Q(A);
- Threat
- QAR1(A),XP(f)
- Vars
- R(b);CHECK,N_GUARD::S(L),XR(b)
- Q(h);N_GUARD,XQ(A)::S(H)
- R(b);OGATE,XP(F)::QAB(A),XR(b)
- P(d);S_CUTR(b)::S(H)
- Q(h);N_GUARD::S(H)
- Q(h);N_GUARD::S(H),XQ(h)
- Refutation
- Q(h);XS(L)
- Try
- Actual
- Q(A);
- Vars
- R(b);CHECK,N_GUARD::S(L),XR(b)
- Q(h);N_GUARD,XQ(A)::S(H)
- Q(h);N_GUARD,XS(L)::QAR1(A)
- R(a);OGATE,XQ(A)::B(B)
- R(a);OGATE,XP(C)::B(B)
- R(b);N_GUARD,XQ(A)::S(H)
- R(b);OGATE,XP(F)::QAB(A)
- B(g);OGATE,XS(H)::R1(J),XP(f)
- B(g);OGATE,XS(L)::R1(J),XP(f)
- P(f);OGATE,XB(G)::R1(K),XP(f)
- P(d);S_CUTR(b)::S(H)
- Q(h);N_GUARD::S(H)
- Q(h);N_GUARD::S(L),XQ(h)
- Q(h);N_GUARD::QAR1(A)
- R(a);OGATE::B(B)
- R(b);OGATE::QAB(A)
- R(b);N_GUARD::S(H)
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).