MESON Chess Problem Database
Problem Display
PID: 11446 (8/R1pp4/RrkN4/2PqP3/3p4/bN1P4/Q5B1/1K6 w - - 0 1)
Hertmann, Sandor
Zaszlonk, 1938
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Rxa6
- 2.Rxa6#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qxg2
- Tries
- 1.Ka1?
- 1...Qxg2
- 2.Qxg2#
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Sa5#
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Bb2+!
- 1...Qxg2
- 1.Kc2?
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Sa5#
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Qxg2+!
- 1...Rxa6
- 1.Bh1?
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qg2
- 2.Bxg2#
- 2.Qxg2#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Qxh1+!
- 1...Rxa6
- 1.Bf3?
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Qxf3!
- 1...Rxa6
- 1.Be4?
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Qxe4!
- 1...Rxa6
- 1.Rb7?
- 1...Qxg2
- 2.Qxg2#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Raxb6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Rxa6!
- 1...Qxg2
- 1.Ra8?
- 1...Qxg2
- 2.Qxg2#
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Qa4#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...cxd6!
- 1...Qxg2
- 1.Qa1?
- 1...Rxa6
- 2.Rxa6#
- 1...Bxc5
- 2.Qa4#
- 1...cxd6
- 2.Rxb6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.Qa4#
- 1...Bb2
- 2.Qa4#
- 1...Bb4
- 2.Qa4#
- 1...Qxg2!
- 1...Rxa6
- 1.Qxa3?
- threat
- 2.Qa4#
- 1...Rxa6
- 2.Sxd4#
- 2.Rxa6#
- 2.Qxa6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Qxg2!
- threat
- 1.Ka1?
- Keys
- 1.Qc2!
- 1...Qxg2
- 2.Qxg2#
- 1...Rxa6
- 2.Sxd4#
- 2.Rxa6#
- 1...Bxc5
- 2.Qxc5#
- 1...cxd6
- 2.Rxb6#
- 1...Qf3
- 2.Bxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Bc1
- 2.cxb6#
- 1...Bb2
- 2.Sa5#
- 1...Bb4
- 2.Sxd4#
- 1...Qxg2
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(c);N_SPINQ(c),OGATE,XB(C)::QAB(B),XQ(c)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Tries
- Try
- K(A);N_SPINS(D),P-FLIGHT
- Vars
- Q(c);N_SPINQ(c),OGATE,XB(C)::QAB(B),XQ(c)
- R(d);N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- Refutation
- B(a);CHECK
- Try
- K(A);N_SPINS(D),S_FLIGHT
- Vars
- R(d);N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- Refutation
- Q(c);CHECK,N_SPINQ(c),XB(C)
- Try
- B(C);
- Vars
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- Q(c);CHECK,N_SPINQ(c),XB(C)
- Try
- B(C);
- Vars
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- Q(c);N_SPINQ(c),XB(C)
- Try
- B(C);
- Vars
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- Q(c);N_SPINQ(c),P_PINP(E),XB(C)
- Try
- R(J);
- Vars
- Q(c);N_SPINQ(c),OGATE,XB(C)::QAB(B),XQ(c)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- R(d);N_PINS(D),N_SPINR(d),XR(H)
- Try
- R(J);
- Vars
- Q(c);N_SPINQ(c),OGATE,XB(C)::QAB(B),XQ(c)
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE,XP(F)::QAB(B)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- P(f);XS(I)
- Try
- Q(B);
- Vars
- R(d);N_PINS(D),N_SPINR(d),OGATE,XR(H)::R(J),XR(d)
- B(a);OGATE,XP(F)::QAB(B)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- B(a);OGATE::QAB(B)
- B(a);N_PINS(D),OGATE::QAB(B)
- Refutation
- Q(c);N_SPINQ(c),XB(C)
- Try
- Q(B);XB(a)
- Threat
- QAB(B)
- Vars
- Q(c);OGATEB::B(C),XQ(c)
- Q(c);OGATEB,P_PINP(E)::B(C),XQ(c)
- Refutation
- Q(c);N_SPINQ(c),XB(C)
- Try
- Actual
- Q(B);
- Vars
- Q(c);N_SPINQ(c),OGATE,XB(C)::QAB(B),XQ(c)
- B(a);OGATE,P_SPINB(a),XP(F)::QAR1(B),XB(a)
- P(f);N_GUARD,XS(I)::R1(H),XR(d)
- Q(c);OGATEB::B(C),XQ(c)
- B(a);N_GUARD::QAR(B)+P(F),XR(d)
- B(a);N_PINS(D)::S(D)
- B(a);N_PINS(D)::S(D),XP(b)
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).