MESON Chess Problem Database
Problem Display
PID: 274133 (7R/3B4/6p1/3QPqp1/2R2rkP/2p2p1p/2P4p/K6N w - - 0 1)
Gross, Erwin
diagrammes, 1979
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...Qe6
- Tries
- 1.Kb1?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxd7
- 1.Ka2?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxd7
- 1.Be6?
- 1...Qxe6
- 2.Qxe6#
- 1...Rxc4
- 2.Qxc4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxe6
- 1.Re4?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxe4
- 2.Qxe4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxd7
- 1.Rh6?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxd7
- 1.Rh7?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...gxh4!
- 1...Qxd7
- 1.Qe4?
- 1...Rxe4
- 2.Rxe4#
- 1...gxh4
- 2.Qxf4#
- 1...Qe6
- 2.Bxe6#
- 1...f2
- 2.Qe2#
- 1...Qxd7!
- 1...Rxe4
- 1.Qc6?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...gxh4
- 2.Qxg6#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2!
- 1...Qxd7
- 1.Qe6?
- 1...Qxe6
- 2.Bxe6#
- 1...Rxc4
- 2.Qxc4#
- 1...gxh4
- 2.Qxg6#
- 1...Rd4
- 2.Rxd4#
- 1...Re4
- 2.Rxe4#
- 1...f2!
- 1...Qxe6
- 1.Qf7?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...gxh4
- 2.Qxg6#
- 1...Rd4
- 2.Rxd4#
- 1...Re4
- 2.Rxe4#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...f2!
- 1...Qxd7
- 1.Qd2?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxg5#
- 1...gxh4
- 2.Qxf4#
- 1...Qe6
- 2.Bxe6#
- 1...f2
- 2.Qd1#
- 2.Qe2#
- 1...Rd4
- 2.Rxd4#
- 2.Qxg5#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxg5#
- 1...cxd2!
- 1...Qxd7
- 1.Qd3?
- 1...Qxd7
- 2.Qxd7#
- 1...Rxc4
- 2.Qxc4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 2.Qxe4#
- 1...f2
- 2.Sxf2#
- 2.Qe2#
- 2.Qd1#
- 2.Qg3#
- 1...Qe6
- 2.Bxe6#
- 1...gxh4!
- 1...Qxd7
- 1.Qd6?
- 1...Qxd7
- 2.Qxd7#
- 1...gxh4
- 2.Qxg6#
- 1...Qe6
- 2.Bxe6#
- 2.Qxe6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re4
- 2.Rxe4#
- 1...f2
- 2.Qd1#
- 1...Rxc4!
- 1...Qxd7
- 1.Kb1?
- Keys
- 1.Qd4!
- 1...Qxd7
- 2.Qxd7#
- 1...Rxd4
- 2.Rxd4#
- 1...gxh4
- 2.Qxf4#
- 1...Qe6
- 2.Bxe6#
- 1...Re4
- 2.Qxe4#
- 1...f2
- 2.Qd1#
- 1...Qxd7
- 1.Qd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Tries
- Try
- K(A);P-FLIGHT,P_SPINP(C)
- Vars
- Q(g);N_PINP(C),N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- K(A);P-FLIGHT
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- B(H);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- R(D);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- R(I);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- R(I);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- P(h);XP(E)
- Try
- Q(F);
- Vars
- R(e);OGATE,XQ(F)::R(D),XR(e)
- P(h);N_GUARD,XP(E)::QAR1(F),XR(e)
- Q(g);OGATEB::B(H),XQ(g)
- P(c);OGATEB::QAB(F)
- Refutation
- Q(g);N_SPINQ(g),XB(H)
- Try
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(h);OGATEB,XP(E)::QAR2(F),XP(i)
- R(e);OGATEB::R(D),XR(e)
- Refutation
- P(c);
- Try
- Q(F);
- Vars
- Q(g);OGATE,XQ(F)::B(H),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(h);OGATEB,XP(E)::QAR2(F),XP(i)
- R(e);OGATEB::R(D),XR(e)
- Refutation
- P(c);
- Try
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- P(h);OGATEB,XP(E)::QAR2(F),XP(i)
- R(e);OGATEB::R(D),XR(e)
- Refutation
- P(c);
- Try
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR1(F),XP(h)
- P(h);N_GUARD,XP(E)::QAR1(F),XR(e)
- Q(g);OGATEB::B(H),XQ(g)
- Refutation
- P(b);XQ(F)
- Try
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR(F),XR(e)
- Q(g);OGATEB::B(H),XQ(g)
- Refutation
- P(h);XP(E)
- Try
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- P(h);OGATEB,XP(E)::QAR2(F),XP(i)
- R(e);OGATEB::R(D),XR(e)
- P(c);OGATEB::QAB(F)
- Refutation
- R(e);N_SPINR(e),XR(D)
- Try
- Actual
- Q(F);
- Vars
- Q(g);N_SPINQ(g),OGATE,XB(H)::QAB(F),XQ(g)
- R(e);OGATE,XQ(F)::R(D),XR(e)
- P(h);N_GUARD,XP(E)::QAR1(F),XR(e)
- Q(g);OGATEB::B(H),XQ(g)
- R(e);OGATEB::QAR2(F),XR(e)
- P(c);OGATEB::QAB(F)
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).