MESON Chess Problem Database
Problem Display
PID: 194376 (3Q4/6p1/K2B2bp/3p1n2/3Nk2p/1P1RN3/2Bp2P1/1n6 w - - 0 1)
Maleika, Gerhard
Probleemblad, 1979
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Sxe3
- 2.Qe7#
- 1...Sg3
- 2.Qxh4#
- 2.Qe7#
- 1...Sxd4
- 2.Qxh4#
- 1...Se7
- 2.Qxe7#
- 1...Sxe3
- Tries
- 1.Sd1?
- threat
- 2.Sf2#
- 2.Rxd2#
- 1...Sxd4
- 2.Re3#
- 1...Sa3
- 2.Sf2#
- 2.Sc3#
- 1...Se3
- 2.Sf2#
- 2.Qe7#
- 1...Sxd6!
- threat
- 1.Sf1?
- threat
- 2.Rxd2#
- 1...Sxd4
- 2.Re3#
- 1...d1Q
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 2.Rd2#
- 1...Sa3
- 2.Sxd2#
- 1...Se3
- 2.Qe7#
- 1...Sxd6!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 2.Rxd2#
- 1...Sxd4
- 2.Re3#
- 1...d1Q
- 2.Sf2#
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 1...d1B
- 2.Sf2#
- 2.Rxd1#
- 1...d1R
- 2.Sf2#
- 2.Rxd1#
- 2.Rd2#
- 1...Sa3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 2.Qe7#
- 1...Sxd6!
- threat
- 1.Sexf5?
- threat
- 2.Rxd2#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxh4#
- 2.Qe7#
- 1...d1Q
- 2.Rxd1#
- 2.Re3#
- 2.Qe7#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxh4#
- 2.Qe7#
- 1...d1B
- 2.Rxd1#
- 2.Re3#
- 2.Qe7#
- 1...d1R
- 2.Rxd1#
- 2.Rd2#
- 2.Re3#
- 2.Qxh4#
- 2.Qe7#
- 1...Bh5
- 2.Rxd2#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Qe7#
- 1...Bf7
- 2.Rxd2#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxh4#
- 1...Sa3
- 2.Re3#
- 2.Qxh4#
- 2.Qe7#
- 1...Sc3
- 2.Rxd2#
- 2.Rxc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxh4#
- 2.Qe7#
- 1...h3
- 2.Sg3#
- 2.Rxd2#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rxh3#
- 2.Qh4#
- 2.Qe7#
- 1...Bxf5!
- threat
- 1.Sdxf5?
- threat
- 2.Rxd2#
- 2.Rc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qxh4#
- 2.Qe7#
- 1...d1Q
- 2.Rxd1#
- 2.Rd4#
- 2.Qe7#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 2.Rc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qxh4#
- 2.Qe7#
- 1...d1B
- 2.Rxd1#
- 2.Rd4#
- 2.Qe7#
- 1...d1R
- 2.Rxd1#
- 2.Rd2#
- 2.Rd4#
- 2.Qxh4#
- 2.Qe7#
- 1...Bh5
- 2.Rxd2#
- 2.Rc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qe7#
- 1...Bf7
- 2.Rxd2#
- 2.Rc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qxh4#
- 1...Sa3
- 2.Rd4#
- 2.Qxh4#
- 2.Qe7#
- 1...Sc3
- 2.Rxd2#
- 2.Rxc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qxh4#
- 2.Qe7#
- 1...h3
- 2.Sg3#
- 2.Rxd2#
- 2.Rc3#
- 2.Rd4#
- 2.Rxd5#
- 2.Qh4#
- 2.Qe7#
- 1...d4
- 2.Rxd4#
- 2.Qxh4#
- 2.Qe7#
- 2.Qa8#
- 1...Bxf5!
- threat
- 1.Se6?
- threat
- 2.Sc5#
- 2.Rc3#
- 1...Sxe3
- 2.Rd4#
- 1...d1Q
- 2.Sc5#
- 1...d1B
- 2.Sc5#
- 1...d1R
- 2.Sc5#
- 1...Sa3
- 2.Sc5#
- 1...Sc3
- 2.Sc5#
- 2.Rxc3#
- 1...Sd4
- 2.Sc5#
- 2.Qxh4#
- 1...d4
- 2.Sc5#
- 2.Qa8#
- 1...Sxd6!
- threat
- 1.Qg5?
- threat
- 2.Rxd2#
- 2.Qf4#
- 2.Qg4#
- 1...Sxe3
- 2.Qxe3#
- 2.Qf4#
- 2.Qe7#
- 2.Qe5#
- 1...Sxd4
- 2.Qf4#
- 2.Qxh4#
- 2.Qg4#
- 2.Qxd5#
- 2.Qe5#
- 1...Sxd6
- 2.Rxd2#
- 1...d1Q
- 2.Rxd1#
- 2.Qf4#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 2.Qf4#
- 2.Qg4#
- 1...d1B
- 2.Rxd1#
- 2.Qf4#
- 1...d1R
- 2.Rxd1#
- 2.Rd2#
- 2.Qf4#
- 2.Qg4#
- 1...Bh5
- 2.Rxd2#
- 2.Qf4#
- 2.Qxf5#
- 1...Sa3
- 2.Qf4#
- 2.Qg4#
- 1...h5
- 2.Rxd2#
- 2.Qf4#
- 1...hxg5!
- threat
- 1.Qf6?
- threat
- 2.Rc3#
- 2.Qe5#
- 2.Qe6#
- 1...Sxe3
- 2.Qe5#
- 2.Qe7#
- 2.Qf3#
- 2.Qf4#
- 2.Qe6#
- 1...Sxd4
- 2.Qxd4#
- 2.Qxh4#
- 2.Qe5#
- 2.Qf4#
- 1...Sxd6
- 2.Rc3#
- 1...d1Q
- 2.Qe5#
- 2.Qe6#
- 1...d1B
- 2.Qe5#
- 2.Qe6#
- 1...d1R
- 2.Qe5#
- 2.Qe6#
- 1...Bf7
- 2.Rc3#
- 2.Qe5#
- 2.Qxf5#
- 1...Sa3
- 2.Qe5#
- 2.Qe6#
- 1...Sc3
- 2.Rxc3#
- 2.Qe5#
- 2.Qe6#
- 1...gxf6!
- threat
- 1.Qd7?
- threat
- 2.Qe6#
- 1...Sxd4
- 2.Qg4#
- 1...Bf7
- 2.Qxf5#
- 1...Sxd6!
- threat
- 1.Qc8?
- threat
- 2.Qe6#
- 1...Sxd4
- 2.Qg4#
- 1...Bf7
- 2.Qxf5#
- 1...Sxd6!
- threat
- 1.Qe8+?
- 1...Se7
- 2.Qxe7#
- 1...Bxe8!
- 1...Se7
- 1.Sd1?
- Keys
- 1.Sc4!
- threat
- 2.Rxd2#
- 1...Sxd4
- 2.Re3#
- 1...Sxd6
- 2.Qxh4#
- 1...dxc4
- 2.Qa8#
- 1...d1Q
- 2.Rxd1#
- 1...d1S
- 2.Rxd1#
- 2.Rd2#
- 1...d1B
- 2.Rxd1#
- 1...d1R
- 2.Rxd1#
- 2.Rd2#
- 1...Sa3
- 2.Sxd2#
- 1...Se3
- 2.Qe7#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- S(f);N_GUARD,XS(E)::QAR(I)
- S(f);N_GUARD,XS(F)::QAR(I),XP(d)
- S(f);N_GUARD::QAR(I),XS(f)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(f);SBLOCK,XS(F)::B(A)+R(D),DCHECK
- Refutation
- S(f);XB(H)
- Try
- S(E);
- Threat
- B(A)+R(D),XP(b)
- Vars
- S(f);SBLOCK,XS(F)::B(A)+R(D),DCHECK
- P(b);OGATE::B(A)+R(D),XQ(b)
- P(b);OGATE::B(A)+R(D),XB(b)
- S(a);N_GUARD::S(E),XP(b)
- S(f);N_GUARD::QAR(I)
- Refutation
- S(f);XB(H)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(f);SBLOCK,XS(F)::B(A)+R(D),DCHECK
- S(a);::S(E)
- Refutation
- S(f);XB(H)
- Try
- S(E);XS(f)
- Threat
- DUALS(8)
- Refutation
- B(g);XS(E)
- Try
- S(F);XS(f)
- Threat
- DUALS(6)
- Refutation
- B(g);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(f);SBLOCK,XS(E)::B(A)+R(D),DCHECK
- P(b);::S(F)
- S(a);::S(F)
- Refutation
- S(f);XB(H)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- S(f);XB(H)::B(A)+R(D),XP(b)
- Refutation
- P(h);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- S(f);XB(H)::B(A)+R(D)
- Refutation
- P(i);XQ(I)
- Try
- Q(I);
- Threat
- QAR2(I)
- Vars
- S(f);OGATE,XS(F)::QAR2(I)
- B(g);N_GUARD::QAB1(I),XS(f)
- Refutation
- S(f);XB(H)
- Try
- Q(I);
- Threat
- QAR2(I)
- Vars
- S(f);OGATE,XS(F)::QAR2(I)
- B(g);N_GUARD::QAB1(I),XS(f)
- Refutation
- S(f);XB(H)
- Try
- Q(I);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR(I),XS(f)
- Refutation
- B(g);XQ(I)
- Try
- Actual
- S(E);
- Threat
- B(A)+R(D),XP(b)
- Vars
- S(f);SBLOCK,XS(F)::B(A)+R(D),DCHECK
- S(f);N_GUARD,XB(H)::QAR(I),XP(d)
- P(e);OGATEB,XS(E)::QAB(I)
- P(b);OGATE::B(A)+R(D),XQ(b)
- P(b);OGATE::B(A)+R(D),XB(b)
- S(a);N_GUARD::S(E),XP(b)
- S(f);N_GUARD::QAR(I)
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).