MESON Chess Problem Database
Problem Display
PID: 162757 (6BK/4b1R1/2r3N1/4Pk2/q3RN2/7P/6PB/3Q4 w - - 0 1)
Forster, Klaus
Die Schwalbe, 2016
#2
11 + 4
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qd3#
- 1...Kg5
- 2.Qh5#
- 1...Qxe4
- 2.Qg4#
- 1...Kxe4
- Tries
- 1.Be6+?
- 1...Kxe4
- 2.Qd3#
- 1...Kg5
- 2.Qh5#
- 1...Rxe6!
- 1...Kxe4
- 1.Re1?
- threat
- 2.Sxe7#
- 2.Qg4#
- 1...Kg5
- 2.Qh5#
- 1...Qxd1
- 2.Sxe7#
- 1...Qxf4
- 2.Sxe7#
- 1...Qa3
- 2.Qg4#
- 1...Qb4
- 2.Qg4#
- 1...Qe4
- 2.Qg4#
- 1...Qa7
- 2.Qg4#
- 1...Re6
- 2.Qg4#
- 1...Rc7
- 2.Qg4#
- 1...Ba3
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bb4
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bh4
- 2.Sxh4#
- 2.Qg4#
- 1...Bc5
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bg5
- 2.Qg4#
- 2.g4#
- 1...Bd6
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bf6
- 2.Qg4#
- 1...Bd8
- 2.Qg4#
- 1...Bf8
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Rxg6!
- threat
- 1.Re3?
- threat
- 2.Sxe7#
- 2.Qg4#
- 1...Kg5
- 2.Qh5#
- 1...Qxd1
- 2.Sxe7#
- 1...Qxf4
- 2.Sxe7#
- 1...Qa3
- 2.Qg4#
- 1...Qb4
- 2.Qg4#
- 1...Qe4
- 2.Qg4#
- 1...Qa7
- 2.Qg4#
- 1...Re6
- 2.Qg4#
- 1...Rc7
- 2.Qg4#
- 1...Ba3
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bb4
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bh4
- 2.Sxh4#
- 2.Qg4#
- 1...Bc5
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bg5
- 2.Qg4#
- 2.g4#
- 1...Bd6
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Bf6
- 2.Qg4#
- 1...Bd8
- 2.Qg4#
- 1...Bf8
- 2.Sh4#
- 2.Qg4#
- 2.Qh5#
- 1...Rxg6!
- threat
- 1.Qf3?
- threat
- 2.Se6#
- 2.Sxe7#
- 1...Kg5
- 2.Qh5#
- 1...Qxe4
- 2.Qg4#
- 1...Rxg6
- 2.Se6#
- 1...Qd1
- 2.Sxe7#
- 1...Qb3
- 2.Sxe7#
- 1...Qb4
- 2.Se6#
- 1...Qa7
- 2.Se6#
- 1...Rc3
- 2.Sxe7#
- 1...Re6
- 2.Sxe6#
- 1...Rc7
- 2.Se6#
- 1...Ba3
- 2.Se6#
- 2.Sh4#
- 1...Bb4
- 2.Se6#
- 2.Sh4#
- 1...Bh4
- 2.Se6#
- 2.Sxh4#
- 1...Bc5
- 2.Se6#
- 2.Sh4#
- 1...Bg5
- 2.g4#
- 1...Bd6
- 2.Se6#
- 2.Sh4#
- 1...Bf6
- 2.Se6#
- 1...Bd8
- 2.Se6#
- 1...Bf8
- 2.Se6#
- 2.Sh4#
- 1...Qa3!
- threat
- 1.g4+?
- 1...Kxe4
- 2.Qd3#
- 1...Kg5!
- 1...Kxe4
- 1.Be6+?
- Keys
- 1.Se6!
- threat
- 2.Qf3#
- 2.Qg4#
- 1...Kxe4
- 2.Qf3#
- 1...Qxd1
- 2.Rf4#
- 1...Qxe4
- 2.Sxe7#
- 1...Rxe6
- 2.Qg4#
- 1...Qb3
- 2.Rf4#
- 2.Qg4#
- 1...Qa3
- 2.Rf4#
- 2.Qg4#
- 1...Rc3
- 2.Qg4#
- 1...Bg5
- 2.Qg4#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- K(b);OGATEB,S_FLIGHT,XR(E)::QAB1(A)
- K(b);P-FLIGHT::QAR1(A)
- Q(a);SBLOCK,XR(E)::QAB1(A)
- Tries
- Try
- B(J);CHECK
- Vars
- K(b);S_FLIGHT,XR(E)::QAB1(A)
- K(b);P-FLIGHT::QAR1(A)
- Refutation
- R(c);XB(J)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT::QAR1(A)
- Q(a);XQ(A)::S(H),XB(d)
- Q(a);XS(F)::S(H),XB(d)
- Q(a);::QAB1(A)
- R(c);::QAB1(A)
- B(d);P_PINR(I)::QAB1(A)
- B(d);::QAB1(A)
- Refutation
- R(c);XS(H)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT::QAR1(A)
- Q(a);XQ(A)::S(H),XB(d)
- Q(a);XS(F)::S(H),XB(d)
- Q(a);::QAB1(A)
- R(c);::QAB1(A)
- B(d);P_PINR(I)::QAB1(A)
- B(d);::QAB1(A)
- Refutation
- R(c);XS(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT::QAR1(A)
- Q(a);SBLOCK,XR(E)::QAB1(A)
- R(c);XS(H)::QAR(A)+S(F)
- Q(a);::S(H),XB(d)
- Q(a);::QAR(A)+S(F)
- R(c);::S(H),XB(d)
- R(c);::QAR(A)+S(F),XR(c)
- R(c);::QAR(A)+S(F)
- B(d);SBLOCK::P(B)
- B(d);P_PINR(I)::QAR(A)+S(F)
- B(d);::QAR(A)+S(F)
- Refutation
- Q(a);
- Try
- P(B);CHECK
- Vars
- K(b);S_FLIGHT,XR(E)::QAB1(A)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- K(b);S_FLIGHT,XR(E)::QAB1(A)
- Q(a);N_GUARD,XQ(A)::R1(E)
- Q(a);SBLOCK,XR(E)::S(H),XB(d)
- R(c);XS(F)::QAB1(A)
- R(c);::QAB1(A)
- B(d);::QAB1(A)
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).