MESON Chess Problem Database
Problem Display
PID: 62334 (2N1R1Q1/1n1B4/3p1p2/3PqP2/1N1pkp2/4p3/2R3Pp/7K w - - 0 1)
ten Cate, Pieter
Schakend Nederland, 1961
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...Qxe8
- 2.Qxe8#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Qe6
- Tries
- 1.Kxh2?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...f3+!
- 1...Qxe8
- 1.Rc1?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...e2!
- 1...Qxe8
- 1.Ra2?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...e2
- 2.Rxe2#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...d3!
- 1...Qxe8
- 1.Rb2?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...e2
- 2.Rxe2#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...d3!
- 1...Qxe8
- 1.Re2?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...d3!
- 1...Qxe8
- 1.Rc4?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...e2!
- 1...Qxe8
- 1.Rc6?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...e2!
- 1...Qxe8
- 1.Rc7?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...e2!
- 1...Qxe8
- 1.Re7?
- 1...Qe6
- 2.Qxe6#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Qxe7!
- 1...Qe6
- 1.Qf7?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Qxe6#
- 1...Qe7
- 2.Rxe7#
- 2.Qxe7#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...f3!
- 1...Qxe8
- 1.Qh7?
- 1...Qe6
- 2.Rxe6#
- 1...Qe7
- 2.Rxe7#
- 2.Qxe7#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qh4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Qxe8!
- 1...Qe6
- 1.Qg4?
- threat
- 2.Qf3#
- 1...Qe6
- 2.Rxe6#
- 1...Qe7
- 2.Rxe7#
- 1...d3
- 2.Rc4#
- 1...Qxe8!
- threat
- 1.Qh8?
- 1...Qxe8
- 2.Qxe8#
- 1...Qe7
- 2.Rxe7#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qh4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Qe6!
- 1...Qxe8
- 1.Kxh2?
- Keys
- 1.Qg6!
- 1...Qxe8
- 2.Qxe8#
- 1...Qe6
- 2.Rxe6#
- 1...Qe7
- 2.Rxe7#
- 1...e2
- 2.Rxe2#
- 1...d3
- 2.Rc4#
- 1...f3
- 2.Qg4#
- 1...Sa5
- 2.Sxd6#
- 1...Sc5
- 2.Sxd6#
- 1...Sd8
- 2.Sxd6#
- 1...Qxe8
- 1.Qg6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- S(i);N_GUARD::S(H),XP(g)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(e);CHECK
- Try
- R(B);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(b);
- Try
- R(B);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(c);
- Try
- R(B);P_PINP(b)
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(c);
- Try
- R(B);P_PINP(c)
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(b);
- Try
- R(B);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(b);
- Try
- R(B);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(b);
- Try
- R(I);
- Vars
- Q(f);OGATEB::QAR2(J),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- Q(f);N_SPINQ(f),XR(I)
- Try
- Q(J);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::QAR2(J),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- P(e);
- Try
- Q(J);
- Vars
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- Q(f);N_SPINQ(f),XR(I)
- Try
- Q(J);P_PINP(e)
- Threat
- QAB1(J)
- Vars
- Q(f);OGATEB::R(I),XQ(f)
- P(c);OGATEB::R(B)
- Refutation
- Q(f);N_SPINQ(f),XR(I)
- Try
- Q(J);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR(J)
- S(i);N_GUARD::S(H),XP(g)
- Refutation
- Q(f);
- Try
- Actual
- Q(J);
- Vars
- Q(f);N_SPINQ(f),OGATE,XR(I)::QAR(J),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- P(b);OGATEB::R(B),XP(b)
- P(c);OGATEB::R(B)
- P(e);OGATEB::QAR2(J)
- S(i);N_GUARD::S(H),XP(g)
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).