MESON Chess Problem Database
Problem Display
PID: 137754 (7n/2p2pK1/7N/QN1B2k1/3p1pP1/7P/5Bp1/7r w - - 0 1)
Ellerman, Arnoldo
Shakhmaty v SSSR, 1963
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.h4#
- 1...Rb1
- 2.h4#
- 1...Rc1
- 2.h4#
- 1...Rd1
- 2.h4#
- 1...Re1
- 2.h4#
- 1...Rf1
- 2.h4#
- 1...Rg1
- 2.h4#
- 1...Sg6
- 2.Sxf7#
- 1...f3
- 2.Qd2#
- 1...Ra1
- Tries
- 1.Bxf7?
- threat
- 2.Sxc7#
- 1...Sxf7
- 2.Sxf7#
- 1...f3
- 2.Qd2#
- 1...Ra1
- 2.h4#
- 1...Rb1
- 2.h4#
- 1...Rc1
- 2.h4#
- 1...Re1
- 2.h4#
- 1...c5
- 2.Qd8#
- 1...c6
- 2.Qd8#
- 1...Sg6!
- threat
- 1.Qe1?
- threat
- 2.Bh4#
- 1...Rxe1
- 2.h4#
- 1...f3
- 2.Qd2#
- 1...Sg6
- 2.Sxf7#
- 1...Rxh3!
- threat
- 1.Qa6?
- threat
- 2.Qf6#
- 1...f6
- 2.Qxf6#
- 1...c6!
- threat
- 1.Bxf7?
- Keys
- 1.Sxc7!
- threat
- 2.Bxf7#
- 1...f3
- 2.Qd2#
- 1...Ra1
- 2.h4#
- 1...Rb1
- 2.h4#
- 1...Rc1
- 2.h4#
- 1...Re1
- 2.h4#
- 1...Sg6
- 2.Sxf7#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- threat
- 1.Sxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::P(B)
- S(h);N_GUARD::S(G),XP(g)
- P(d);OGATEB::QAB(D)
- Tries
- Try
- B(F);XP(g)
- Threat
- QAR(D)+S(E),XP(f)
- Vars
- S(h);XB(F)::S(G),XS(h)
- P(d);OGATEB::QAB(D)
- R(a);N_GUARD::P(B)
- P(f);OGATE::QAB(D)
- Refutation
- S(h);
- Try
- Q(D);
- Threat
- B(A)
- Vars
- R(a);N_GUARD,XQ(D)::P(B)
- P(d);OGATEB::QAB(D)
- S(h);N_GUARD::S(G),XP(g)
- Refutation
- R(a);XP(B)
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- P(g);::QAB1(D),XP(g)
- Refutation
- P(f);
- Try
- Actual
- S(E);XP(f)
- Threat
- QAR(D)+B(F),XP(g)
- Vars
- P(d);OGATEB::QAB(D)
- R(a);N_GUARD::P(B)
- S(h);N_GUARD::S(G),XP(g)
- P(g);N_GUARD::S(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).