MESON Chess Problem Database
Problem Display
PID: 53823 (r6k/6pp/7N/8/2n4K/2Bb4/2r1R1p1/6Q1 w - - 0 1)
Humm, GW
Chess, 1942
#2
5 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Re8#
- 1...Ra2
- 2.Re8#
- 1...Ra3
- 2.Re8#
- 1...Ra4
- 2.Re8#
- 1...Ra5
- 2.Re8#
- 1...Ra6
- 2.Re8#
- 1...Ra7
- 2.Re8#
- 1...Re8
- 2.Rxe8#
- 1...Rg8
- 2.Sf7#
- 1...Ra1
- Tries
- 1.Qa1?
- threat
- 2.Bxg7#
- 2.Qxa8#
- 1...Rxe2
- 2.Bxg7#
- 1...Rxc3
- 2.Qxa8#
- 1...Rxa1
- 2.Re8#
- 1...g1Q
- 2.Qxa8#
- 1...g1R
- 2.Qxa8#
- 1...Rca2
- 2.Bxg7#
- 1...Raa2
- 2.Bxg7#
- 2.Re8#
- 1...Ra3
- 2.Bxg7#
- 2.Re8#
- 1...Ra4
- 2.Bxg7#
- 2.Re8#
- 1...Ra5
- 2.Bxg7#
- 2.Re8#
- 1...Ra6
- 2.Bxg7#
- 2.Re8#
- 1...Ra7
- 2.Re8#
- 1...Rb8
- 2.Bxg7#
- 1...Rc8
- 2.Bxg7#
- 1...Rd8
- 2.Bxg7#
- 1...Re8
- 2.Bxg7#
- 2.Rxe8#
- 1...Rf8
- 2.Bxg7#
- 1...Rg8
- 2.Sf7#
- 1...Be4
- 2.Bxg7#
- 1...Bf5
- 2.Bxg7#
- 1...Bg6
- 2.Bxg7#
- 1...Sb2
- 2.Qxa8#
- 1...Sa3
- 2.Bxg7#
- 1...Sa5
- 2.Bxg7#
- 1...Se5
- 2.Qxa8#
- 1...Sb6
- 2.Bxg7#
- 1...Sd6
- 2.Bxg7#
- 1...Rb2!
- threat
- 1.Qxg2?
- threat
- 2.Bxg7#
- 2.Qxa8#
- 2.Qxg7#
- 1...Rxe2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rxc3
- 2.Qxa8#
- 1...Rca2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rb2
- 2.Bxg7#
- 2.Qxg7#
- 1...Ra1
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Raa2
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Ra3
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Ra4
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Ra5
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Ra6
- 2.Bxg7#
- 2.Re8#
- 2.Qxg7#
- 1...Ra7
- 2.Re8#
- 1...Rb8
- 2.Bxg7#
- 2.Qxg7#
- 1...Rc8
- 2.Bxg7#
- 2.Qxg7#
- 1...Rd8
- 2.Bxg7#
- 2.Qxg7#
- 1...Re8
- 2.Bxg7#
- 2.Rxe8#
- 2.Qxg7#
- 1...Rf8
- 2.Bxg7#
- 2.Qxg7#
- 1...Rg8
- 2.Sf7#
- 1...Be4
- 2.Bxg7#
- 2.Qxg7#
- 1...Bf5
- 2.Bxg7#
- 2.Qxg7#
- 1...Se5
- 2.Qxa8#
- 1...Sb6
- 2.Bxg7#
- 2.Qxg7#
- 1...Sd6
- 2.Bxg7#
- 2.Qxg7#
- 1...Bg6!
- threat
- 1.Qa1?
- Keys
- 1.Qa7!
- threat
- 2.Bxg7#
- 2.Qxg7#
- 2.Qxa8#
- 1...Rxe2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rxc3
- 2.Qxa8#
- 1...Rxa7
- 2.Re8#
- 1...g1Q
- 2.Qxa8#
- 1...g1R
- 2.Qxa8#
- 1...Ra2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rb2
- 2.Bxg7#
- 2.Qxg7#
- 1...Rb8
- 2.Bxg7#
- 2.Qxb8#
- 2.Qxg7#
- 1...Rc8
- 2.Bxg7#
- 2.Qxg7#
- 1...Rd8
- 2.Bxg7#
- 2.Qxg7#
- 1...Re8
- 2.Bxg7#
- 2.Rxe8#
- 2.Qxg7#
- 1...Rf8
- 2.Bxg7#
- 2.Qxg7#
- 1...Rg8
- 2.Sf7#
- 1...Be4
- 2.Bxg7#
- 2.Qxg7#
- 1...Bf5
- 2.Bxg7#
- 2.Qxg7#
- 1...Bg6
- 2.Bxg7#
- 2.Qxg7#
- 1...Se5
- 2.Qxa8#
- 1...Sb6
- 2.Bxg7#
- 2.Qxg7#
- 1...Sd6
- 2.Bxg7#
- 2.Qxg7#
- threat
- 1.Qa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(g);N_GUARD::R(B)
- R(g);N_GUARD::R(B),XR(g)
- R(g);SBLOCK::S(E)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);XR(B)::B(C),XP(e)
- R(a);N_SPINP(e),XB(C)::QAB1(A),XR(g)
- R(g);N_GUARD,XQ(A)::R(B)
- P(b);::QAB1(A),XR(g)
- R(a);::B(C),XP(e)
- R(g);N_GUARD::R(B)
- R(g);::B(C),XP(e)
- R(g);SBLOCK::S(E)
- B(c);::B(C),XP(e)
- S(d);::QAB1(A),XR(g)
- S(d);::B(C),XP(e)
- S(d);N_SPINP(e)::QAB1(A),XR(g)
- Refutation
- R(a);
- Try
- Q(A);XP(b)
- Threat
- DUALS(3)
- Vars
- R(a);N_SPINP(e),XB(C)::QAB1(A),XR(g)
- R(g);N_GUARD::R(B)
- R(g);SBLOCK::S(E)
- S(d);N_SPINP(e)::QAB1(A),XR(g)
- Refutation
- B(c);
- Try
- Actual
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(a);N_SPINP(e),XB(C)::QAB1(A),XR(g)
- R(g);N_GUARD,XQ(A)::R(B)
- P(b);::QAB1(A),XR(g)
- R(g);SBLOCK::S(E)
- S(d);N_SPINP(e)::QAB1(A),XR(g)
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).