MESON Chess Problem Database
Problem Display
PID: 41176 (KQ6/3p4/3p2p1/2b1p2p/1nBk2pN/N1n1RPP1/3P2P1/8 w - - 0 1)
Clark, Robert Winslow
British Chess Magazine, 1933
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Bb6
- 2.Qxb6#
- 1...Ba7
- 2.Qxa7#
- 1...Sb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sca2
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sb5
- 2.Re4#
- 1...Scd5
- 2.Re4#
- 1...Sba2
- 2.Rd3#
- 1...Sc2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sbd5
- 2.Rd3#
- 1...Sa6
- 2.Rd3#
- 1...Sc6
- 2.Rd3#
- 1...gxf3
- 2.Sxf3#
- 1...e4
- 2.Qh8#
- 1...d5
- 2.Qxe5#
- 1...g5
- 2.Sf5#
- 1...Bb6
- Tries
- 1.Kb7?
- 1...gxf3
- 2.Sxf3#
- 1...Ba7
- 2.Qxa7#
- 1...e4
- 2.Qh8#
- 1...Sb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sca2
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sb5
- 2.Re4#
- 1...Scd5
- 2.Re4#
- 1...Sba2
- 2.Rd3#
- 1...Sc2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sbd5
- 2.Rd3#
- 1...Sa6
- 2.Rd3#
- 1...Sc6
- 2.Rd3#
- 1...d5
- 2.Qxe5#
- 1...g5
- 2.Sf5#
- 1...Bb6!
- 1...gxf3
- 1.Sb5+?
- 1...Sxb5
- 2.Re4#
- 1...Kxc4!
- 1...Sxb5
- 1.Rxc3?
- threat
- 2.Sb5#
- 1...Bb6
- 2.Qxb6#
- 1...Ba7
- 2.Qxa7#
- 1...e4
- 2.Qh8#
- 1...gxf3!
- threat
- 1.Qxd6+?
- 1...Scd5
- 2.Re4#
- 2.Qxe5#
- 1...Sbd5
- 2.Rd3#
- 2.Qxe5#
- 1...Bxd6!
- 1...Scd5
- 1.Qc7?
- 1...gxf3
- 2.Sxf3#
- 1...Scd5
- 2.Re4#
- 1...Bb6
- 2.Qxb6#
- 1...Ba7
- 2.Qxa7#
- 1...Sb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sca2
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sb5
- 2.Re4#
- 1...Sba2
- 2.Rd3#
- 1...Sc2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sbd5
- 2.Rd3#
- 1...Sa6
- 2.Rd3#
- 1...Sc6
- 2.Rd3#
- 1...d5
- 2.Qxe5#
- 1...g5
- 2.Sf5#
- 1...e4!
- 1...gxf3
- 1.Qxb4?
- threat
- 2.Sc2#
- 2.Rd3#
- 2.Qxc3#
- 1...gxf3
- 2.Sc2#
- 2.Sxf3#
- 2.Qxc3#
- 1...e4
- 2.Qxc3#
- 1...Sd5
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Bb6
- 2.Sc2#
- 2.Ba2#
- 2.Bb3#
- 2.Be6#
- 2.Bf7#
- 2.Bg8#
- 2.Rd3#
- 2.Qxb6#
- 1...Ba7
- 2.Sc2#
- 2.Ba2#
- 2.Bb3#
- 2.Be6#
- 2.Bf7#
- 2.Bg8#
- 2.Rd3#
- 1...Sb1
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Sd1
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Sa2
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Se2
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Sa4
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Re4#
- 1...Se4
- 2.Sc2#
- 2.Sb5#
- 2.Rd3#
- 2.Rxe4#
- 1...Sb5
- 2.Sc2#
- 2.Sxb5#
- 2.Rd3#
- 2.Re4#
- 1...Bxb4!
- threat
- 1.fxg4?
- threat
- 2.Sf3#
- 1...Bb6
- 2.Qxb6#
- 1...Ba7
- 2.Qxa7#
- 1...e4
- 2.Qh8#
- 1...hxg4!
- threat
- 1.Kb7?
- Keys
- 1.Bb3!
- 1...gxf3
- 2.Sxf3#
- 1...Bb6
- 2.Qxb6#
- 1...Ba7
- 2.Qxa7#
- 2.Qxb4#
- 1...e4
- 2.Qh8#
- 1...Sb1
- 2.Sb5#
- 1...Sd1
- 2.Sb5#
- 1...Sca2
- 2.Sb5#
- 1...Se2
- 2.Sb5#
- 1...Sa4
- 2.Sb5#
- 1...Se4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Scd5
- 2.Sb5#
- 1...Sba2
- 2.Sc2#
- 1...Sc2
- 2.Sxc2#
- 1...Sd3
- 2.Sc2#
- 1...Sbd5
- 2.Sc2#
- 1...Sa6
- 2.Sc2#
- 1...Sc6
- 2.Sc2#
- 1...d5
- 2.Qxe5#
- 1...g5
- 2.Sf5#
- 1...gxf3
- 1.Bb3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- B(e);OGATEB::QAB(J),XB(e)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- P(d);XP(E)::S(H),XP(d)
- P(f);OGATEB::QAB(J)
- P(h);OGATE::QAB1(J),XP(f)
- P(i);N_GUARD::S(H)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- P(d);XP(E)::S(H),XP(d)
- B(e);OGATEB::QAB(J),XB(e)
- P(f);OGATEB::QAB(J)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- P(h);OGATE::QAB1(J),XP(f)
- P(i);N_GUARD::S(H)
- Refutation
- B(e);
- Try
- S(C);CHECK
- Vars
- S(a);XS(C)::R1(D)
- Refutation
- K(c);P-FLIGHT,XB(G)
- Try
- R(D);XS(a)
- Threat
- S(C)
- Vars
- B(e);OGATEB::QAB(J),XB(e)
- P(f);OGATEB::QAB(J)
- Refutation
- P(d);XP(E)
- Try
- Q(J);CHECK,XP(h)
- Refutation
- B(e);XQ(J)
- Try
- Q(J);
- Vars
- P(d);XP(E)::S(H),XP(d)
- S(a);N_GUARD::R1(D)
- B(e);OGATEB::QAB(J),XB(e)
- S(a);N_GUARD::R1(D),XS(a)
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- P(h);OGATE::QAB1(J),XP(f)
- P(i);N_GUARD::S(H)
- Refutation
- P(f);
- Try
- Q(J);XS(b)
- Threat
- DUALS(3)
- Vars
- P(f);::QAB1(J),XS(a)
- Refutation
- B(e);XQ(J)
- Try
- P(E);XP(d)
- Threat
- S(H)
- Vars
- B(e);OGATEB::QAB(J),XB(e)
- P(f);OGATEB::QAB(J)
- Refutation
- P(g);XP(E)
- Try
- Actual
- B(G);
- Vars
- P(d);XP(E)::S(H),XP(d)
- B(e);OGATEB::QAB(J),XB(e)
- P(f);OGATEB::QAB(J)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(h);OGATE::QAB1(J),XP(f)
- P(i);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).