MESON Chess Problem Database
Problem Display
PID: 200639 (K7/2B1p3/1pP1k1P1/1R3pP1/3pN2n/5Q1p/b6q/1B6 w - - 0 1)
van Dooren, Rene
Problemas, 1993
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Bxa2#
- 2.Re5#
- 1...Qg3
- 2.Bxa2#
- 1...Qf4
- 2.Bxa2#
- 1...Qe5
- 2.Rxe5#
- 1...Qxc7
- 2.Bxa2#
- 1...Qh1
- 2.Bxa2#
- 2.Re5#
- 1...Qb2
- 2.Re5#
- 1...Qc2
- 2.Re5#
- 1...Qd2
- 2.Re5#
- 1...Qe2
- 2.Re5#
- 1...Qf2
- 2.Re5#
- 1...Qg2
- 2.Re5#
- 1...Bxb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Sg2
- 2.Bxa2#
- 2.Qxf5#
- 1...Sxg6
- 2.Qxf5#
- 1...fxe4
- 2.Qf7#
- 1...f4
- 2.Re5#
- 1...Qg1
- Tries
- 1.Bxh2?
- threat
- 2.Bxa2#
- 2.Re5#
- 1...Bxb1
- 2.Re5#
- 2.Qb3#
- 1...Sxf3
- 2.Bxa2#
- 1...Sxg6
- 2.Bxa2#
- 2.Qxf5#
- 1...fxe4
- 2.Bxa2#
- 2.Qxe4#
- 2.Qf7#
- 1...Bb3
- 2.Re5#
- 2.Qxb3#
- 1...Bc4
- 2.Re5#
- 1...f4
- 2.Bxa2#
- 1...Bd5!
- threat
- 1.Qe2?
- threat
- 2.Bxa2#
- 1...Qxe2
- 2.Re5#
- 1...Bxb1
- 2.Qc4#
- 1...Qd6
- 2.Sxd6#
- 1...Qg3
- 2.Sxg3#
- 1...Qe5
- 2.Rxe5#
- 1...Bc4
- 2.Qxc4#
- 1...Bd5
- 2.Sc5#
- 1...Bb3!
- threat
- 1.Qf4?
- threat
- 2.Re5#
- 1...Qxf4
- 2.Bxa2#
- 1...Sxg6
- 2.Qxf5#
- 1...Sf3
- 2.Qxf5#
- 1...Bd5!
- threat
- 1.g7?
- threat
- 2.g8Q#
- 2.g8B#
- 1...Qxc7
- 2.Bxa2#
- 2.g8Q#
- 2.g8B#
- 1...Bxb1
- 2.Qb3#
- 2.g8Q#
- 2.g8B#
- 1...Sxf3
- 2.g8Q#
- 2.g8B#
- 1...fxe4
- 2.g8Q#
- 2.g8B#
- 1...Qd6
- 2.g8Q#
- 2.g8B#
- 1...Qg1
- 2.Bxa2#
- 2.g8Q#
- 2.g8B#
- 1...Qg3
- 2.Bxa2#
- 2.g8Q#
- 2.g8B#
- 1...Qf4
- 2.Bxa2#
- 2.g8Q#
- 2.g8B#
- 1...Qe5
- 2.g8Q#
- 2.g8B#
- 1...Qh1
- 2.Bxa2#
- 2.g8Q#
- 2.g8B#
- 1...Qb2
- 2.g8Q#
- 2.g8B#
- 1...Qc2
- 2.g8Q#
- 2.g8B#
- 1...Qd2
- 2.g8Q#
- 2.g8B#
- 1...Qe2
- 2.g8Q#
- 2.g8B#
- 1...Qf2
- 2.g8Q#
- 2.g8B#
- 1...Qg2
- 2.g8Q#
- 2.g8B#
- 1...Bb3
- 2.Qxb3#
- 2.g8Q#
- 2.g8B#
- 1...Bc4
- 2.g8Q#
- 2.g8B#
- 1...Bd5
- 2.g8Q#
- 2.g8B#
- 1...Sg2
- 2.Bxa2#
- 2.Qxf5#
- 2.g8Q#
- 2.g8B#
- 1...Sg6
- 2.Qxf5#
- 2.g8Q#
- 2.g8B#
- 1...d3
- 2.g8Q#
- 2.g8B#
- 1...f4
- 2.g8Q#
- 2.g8B#
- 1...Kf7!
- threat
- 1.Bxh2?
- Keys
- 1.Sg3!
- threat
- 2.Re5#
- 1...Qxg3
- 2.Bxa2#
- 1...Sxf3
- 2.Bxf5#
- 1...Sxg6
- 2.Qxf5#
- 1...Qe2
- 2.Qxe2#
- 1...Bd5
- 2.Qxd5#
- threat
- 1.Sg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(b);N_GUARD::B(A),XB(a)
- Q(b);N_GUARD::R1(D),XQ(b)
- Q(b);N_GUARD,XB(H)::B(A),XB(a)
- Q(b);N_GUARD::R1(D)
- B(a);N_GUARD,XB(A)::QAB(B)
- B(a);N_GUARD::QAB(B),XB(a)
- S(e);N_GUARD,XP(G)::QAB1(B),XP(f)
- P(f);OGATE,XS(C)::QAB1(B)
- P(f);S_CUTQ(b)::R1(D)
- Tries
- Try
- B(H);XQ(b)
- Threat
- DUALS(2)
- Vars
- S(e);XQ(B)::B(A),XB(a)
- B(a);::R1(D)
- P(f);::B(A),XB(a)
- Refutation
- B(a);P_PINP(F)
- Try
- Q(B);
- Threat
- B(A),XB(a)
- Vars
- Q(b);N_GUARD,XQ(B)::R1(D)
- B(a);N_GUARD,XB(A)::QAB(B)
- Q(b);N_GUARD::QAR(B)+S(C),XQ(b)
- Q(b);N_GUARD::R1(D),XQ(b)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);P_PINP(F),SBLOCK::QAR(B)+S(C),DCHECK
- Refutation
- B(a);
- Try
- Q(B);
- Threat
- R1(D)
- Vars
- Q(b);N_GUARD,XQ(B)::B(A),XB(a)
- S(e);N_GUARD,XP(G)::QAB1(B),XP(f)
- S(e);N_GUARD::QAB1(B),XP(f)
- Refutation
- B(a);P_PINP(F)
- Try
- P(G);
- Threat
- P=Q
- Vars
- S(e);XQ(B)::P=Q
- P(f);XS(C)::P=Q
- Q(b);::P=Q
- B(a);::P=Q
- B(a);P_PINP(F)::P=Q
- P(d);::P=Q
- P(f);::P=Q
- Refutation
- K(h);P_SPINP(f),S_FLIGHT
- Try
- Actual
- S(C);
- Threat
- R1(D)
- Vars
- Q(b);N_GUARD,XS(C)::B(A),XB(a)
- S(e);N_GUARD,XQ(B)::B(A),XP(f)
- S(e);N_GUARD,XP(G)::QAB1(B),XP(f)
- Q(b);N_GUARD::QAR(B),XQ(b)
- B(a);N_GUARD,P_PINP(F)::QAB1(B),XB(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).