MESON Chess Problem Database
Problem Display
PID: 275373 (1Rr1N3/2Rp1p2/1r3Q1K/1n1k2p1/2n3B1/1P1NpP2/8/B1q1b3 w - - 0 1)
Klein, Laszlo
British Chess Magazine, 1935
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.bxc4#
- 1...Qd2
- 2.bxc4#
- 1...Qa3
- 2.bxc4#
- 1...Qxa1
- 2.bxc4#
- 1...Qb1
- 2.bxc4#
- 1...Qd1
- 2.bxc4#
- 1...Ra6
- 2.Rxb5#
- 1...Rd6
- 2.Rxb5#
- 1...Re6
- 2.Rxb5#
- 1...Rb7
- 2.Qxf7#
- 1...Rbxb8
- 2.Qxf7#
- 1...Rcxb8
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Rxe8
- 2.Rc5#
- 1...Bf2
- 2.Sb4#
- 1...Bc3
- 2.bxc4#
- 1...Bg3
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Bh4
- 2.Sb4#
- 1...Sd2
- 2.Sb4#
- 1...Scd6
- 2.Qe5#
- 1...Sc3
- 2.bxc4#
- 1...Sbd6
- 2.Qd4#
- 1...d6
- 2.Qxf7#
- 1...Qb2
- Tries
- 1.Bf5?
- threat
- 2.Be4#
- 1...Rxe8
- 2.Rc5#
- 1...Re6
- 2.Rxb5#
- 1...Sd2
- 2.Sb4#
- 1...Scd6
- 2.Qe5#
- 1...Sc3
- 2.bxc4#
- 1...Sbd6
- 2.Qd4#
- 1...Rxf6+!
- threat
- 1.Qxb6?
- threat
- 2.Sf6#
- 2.Qc5#
- 2.Qxb5#
- 2.Qb7#
- 1...Qxa1
- 2.Qc5#
- 2.bxc4#
- 1...Rxc7
- 2.Sf6#
- 1...Rxb8
- 2.Sf6#
- 2.Rc5#
- 2.Qc5#
- 1...Rxe8
- 2.Rc5#
- 2.Qc5#
- 1...Sxc7
- 2.Sf6#
- 2.Qc5#
- 2.Qb7#
- 1...Qb2
- 2.Qc5#
- 2.bxc4#
- 1...Qa3
- 2.Sf6#
- 2.Qb7#
- 2.bxc4#
- 1...Qc3
- 2.Qc5#
- 1...Bc3
- 2.Qc5#
- 2.bxc4#
- 1...Bb4
- 2.Sxb4#
- 2.Sf6#
- 2.Qb7#
- 1...Sb2
- 2.Sf6#
- 1...Sd2
- 2.Sb4#
- 2.Sf6#
- 1...Sca3
- 2.Sf6#
- 1...Sa5
- 2.Sf6#
- 1...Se5
- 2.Sf6#
- 1...Scd6
- 2.Sf6#
- 1...Sba3
- 2.Sf6#
- 2.Qd4#
- 2.Qc5#
- 2.Qb7#
- 1...Sc3
- 2.Sf6#
- 2.Qc5#
- 2.bxc4#
- 1...Sd4
- 2.Sf6#
- 2.Qxd4#
- 2.Qc5#
- 1...Sbd6
- 2.Sf6#
- 2.Qd4#
- 2.Qc5#
- 1...Sa7
- 2.Sf6#
- 2.Qd4#
- 2.Qc5#
- 1...d6
- 2.Sf6#
- 2.Qxb5#
- 2.Qc6#
- 2.Qb7#
- 1...f5
- 2.Sf6#
- 1...f6
- 2.Sxf6#
- 2.Qc5#
- 2.Qxb5#
- 2.Qb7#
- 1...Sxb6!
- threat
- 1.Qd6+?
- 1...Scxd6
- 2.Sf6#
- 1...Sbxd6
- 2.Sf6#
- 1...Rxd6+!
- 1...Scxd6
- 1.Bf5?
- Keys
- 1.Rxb6!
- threat
- 2.Rxb5#
- 2.Qxf7#
- 1...Qxa1
- 2.Rxb5#
- 2.bxc4#
- 1...Rxc7
- 2.Qxf7#
- 1...Rxe8
- 2.Rxb5#
- 2.Rc5#
- 1...Sxb6
- 2.Qe5#
- 2.Qf5#
- 2.Qxf7#
- 1...Sxc7
- 2.Qd4#
- 1...Qb2
- 2.Rxb5#
- 2.bxc4#
- 1...Qa3
- 2.Qxf7#
- 2.bxc4#
- 1...Qc3
- 2.Rxb5#
- 1...Rb8
- 2.Rc5#
- 2.Qxf7#
- 1...Bc3
- 2.Rxb5#
- 2.bxc4#
- 1...Bb4
- 2.Sxb4#
- 2.Qxf7#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Sb4#
- 2.Qe5#
- 2.Qf5#
- 2.Qxf7#
- 1...Sca3
- 2.Qe5#
- 2.Qf5#
- 2.Qxf7#
- 1...Sa5
- 2.Qe5#
- 2.Qf5#
- 2.Qxf7#
- 1...Se5
- 2.Qxe5#
- 1...Scd6
- 2.Qe5#
- 1...Sba3
- 2.Qd4#
- 2.Qxf7#
- 1...Sc3
- 2.Sb4#
- 2.bxc4#
- 1...Sd4
- 2.Qxd4#
- 1...Sbd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 2.Qxf7#
- threat
- 1.Rxb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 22
- Sets
- Q(a);N_GUARD::P(B),XS(d)
- Q(a);N_GUARD,XB(A)::P(B),XS(d)
- R(h);OGATE::R(I),XS(e)
- R(h);N_PINQ(F)::QAB(F),XP(j)
- R(h);N_PINQ(F),XR(I)::QAB(F),XP(j)
- R(k);N_GUARD,XR(I)::R1(H)
- R(k);N_GUARD::R1(H)
- R(k);N_GUARD,XS(J)::R1(H)
- B(b);N_GUARD::S(C)
- B(b);S_CUTQ(a)::P(B),XS(d)
- B(b);N_GUARD::S(C),XB(b)
- S(d);S_CUTB(b)::S(C)
- S(d);N_PINQ(F)::QAR1(F)
- S(e);S_CUTQ(a)::P(B),XS(d)
- S(e);N_PINQ(F)::QAR1(F)
- P(i);N_PINQ(F)::QAB(F),XP(j)
- Tries
- Try
- B(E);
- Threat
- B(E)
- Vars
- R(k);N_GUARD,XS(J)::R1(H)
- R(h);OGATE::R(I),XS(e)
- S(d);S_CUTB(b)::S(C)
- S(d);N_PINQ(F)::QAR1(F)
- S(e);S_CUTQ(a)::P(B),XS(d)
- S(e);N_PINQ(F)::QAR1(F)
- Refutation
- R(h);CHECK,XQ(F)
- Try
- Q(F);N_SPINQ(F),XR(h)
- Threat
- DUALS(4)
- Vars
- R(k);XR(H)::S(J)
- Q(a);::QAR1(F)
- S(d);::S(J)
- P(j);::S(J)
- Refutation
- S(d);XQ(F)
- Try
- Q(F);CHECK
- Vars
- S(d);SBLOCK,XQ(F)::S(J)
- S(e);SBLOCK,XQ(F)::S(J)
- Refutation
- R(h);CHECK,XQ(F)
- Try
- Actual
- R(I);N_SPINQ(F),XR(h)
- Threat
- DUALS(2)
- Vars
- R(k);XR(H)::QAB(F),XP(j)
- S(e);N_GUARD,XR(H)::QAR1(F)
- Q(a);::R(I),XS(e)
- S(d);N_GUARD::QAR1(F)
- S(d);N_GUARD::QAR1(F),XS(d)
- S(e);N_GUARD::QAR1(F),XS(e)
- S(e);N_GUARD::QAR1(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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