MESON Chess Problem Database
Problem Display
PID: 149121 (8/3q2R1/5PBB/1P6/1pP4P/1K1Q1Nkp/7b/5R2 w - - 0 1)
Wissmann, Dolf
Friesch Dagblad, 1987
#2
11 + 5
SOLUTION
- SOUND
- Sets
- 1...Kg2
- 2.Se1#
- 1...Kg4
- 2.Bf7#
- 1...Qxb5
- 2.Bf5#
- 1...Qf5
- 2.Bxf5#
- 1...Qc6
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Qe6
- 2.Bf5#
- 1...Qc8
- 2.Bf5#
- 1...Qe8
- 2.Bf7#
- 2.Bxe8#
- 1...Qxd3+
- 2.Bxd3#
- 1...Qd4
- 2.Be4#
- 1...Qd5
- 2.Bf5#
- 1...Qd6
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Qa7
- 2.Bf7#
- 1...Qb7
- 2.Bf7#
- 1...Qc7
- 2.Bf7#
- 1...Qe7
- 2.Bf7#
- 1...Qf7
- 2.Bxf7#
- 1...Qd8
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Kg2
- Tries
- 1.Bh5+?
- 1...Qg4
- 2.Rxg4#
- 1...Qxg7!
- 1...Qg4
- 1.Rg1+?
- 1...Kf2
- 2.Qf1#
- 2.Qe3#
- 1...Bxg1!
- 1...Kf2
- 1.Qd4?
- 1...Kg2
- 2.Qf2#
- 1...Qxb5
- 2.Bf5#
- 1...Qxd4
- 2.Be4#
- 1...Qg4
- 2.Qf2#
- 1...Qf5
- 2.Bxf5#
- 1...Qc6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Qe6
- 2.Bf5#
- 1...Qc8
- 2.Bf5#
- 1...Qe8
- 2.Bf7#
- 2.Bxe8#
- 1...Qd5
- 2.Bf5#
- 1...Qd6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Qa7
- 2.Bf7#
- 1...Qb7
- 2.Bf7#
- 1...Qc7
- 2.Bf7#
- 1...Qe7
- 2.Bf7#
- 1...Qf7
- 2.Bxf7#
- 1...Qd8
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Bg1
- 2.Qxg1#
- 1...Qxg7!
- 1...Kg2
- 1.Bh5+?
- Keys
- 1.Qe3!
- 1...Qd1+
- 2.Bc2#
- 1...Qd3+
- 2.Bxd3#
- 1...Kg2
- 2.Qf2#
- 1...Kg4
- 2.Qg5#
- 1...Qxb5
- 2.Bf5#
- 1...Qxg7
- 2.Qg5#
- 1...Qg4
- 2.Qf2#
- 1...Qf5
- 2.Bxf5#
- 1...Qc6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 2.Qg5#
- 1...Qe6
- 2.Bf5#
- 1...Qc8
- 2.Bf5#
- 1...Qe8
- 2.Bf7#
- 2.Bxe8#
- 2.Qg5#
- 1...Qd2
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 1...Qd4
- 2.Be4#
- 1...Qd5
- 2.Bf5#
- 1...Qd6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 2.Qg5#
- 1...Qa7
- 2.Bf7#
- 2.Qg5#
- 1...Qb7
- 2.Bf7#
- 2.Qg5#
- 1...Qc7
- 2.Bf7#
- 2.Qg5#
- 1...Qe7
- 2.Bf7#
- 2.Qg5#
- 1...Qf7
- 2.Bxf7#
- 2.Qg5#
- 1...Qd8
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Bh5#
- 2.Bf7#
- 2.Bh7#
- 2.Be8#
- 2.Qg5#
- 1...Bg1
- 2.Rxg1#
- 2.Qxg1#
- 1...Qd1+
- 1.Qe3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- K(b);P-FLIGHT::S(D)
- K(b);P-FLIGHT::R(K)+B(I)
- Q(e);N_GUARD,XP(G)::R(K)+B(I)
- Q(e);N_GUARD::R(K)+B(I),XQ(e)
- Q(e);N_GUARD,P_PINP(E)::R(K)+B(I)
- Q(e);N_GUARD::R(K)+B(I)
- Q(e);CHECK,OGATE,XQ(C)::R(K)+B(I),XQ(e)
- Q(e);N_GUARD,P_PINP(E)::R(K)+B(I),XQ(e)
- Tries
- Try
- B(I);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::R1(K),XQ(e)
- Refutation
- Q(e);XR(K)
- Try
- R(A);CHECK
- Refutation
- B(a);XR(A)
- Try
- Q(C);
- Vars
- K(b);P-FLIGHT::QAR1(C)
- Q(e);N_GUARD,XP(G)::R(K)+B(I)
- Q(e);N_GUARD,XQ(C)::R(K)+B(I)
- Q(e);SBLOCK::QAB1(C)
- Q(e);N_GUARD::R(K)+B(I),XQ(e)
- Q(e);N_GUARD,P_PINP(E)::R(K)+B(I)
- Q(e);N_GUARD::R(K)+B(I)
- Q(e);N_GUARD,P_PINP(E)::R(K)+B(I),XQ(e)
- B(a);N_GUARD::QAR2(C),XB(a)
- Refutation
- Q(e);XR(K)
- Try
- Actual
- Q(C);
- Vars
- Q(e);CHECK,N_GUARD::R(K)+B(I)
- Q(e);CHECK,N_GUARD::R(K)+B(I),XQ(e)
- K(b);P-FLIGHT::QAR1(C)
- Q(e);N_GUARD,XP(G)::R(K)+B(I)
- Q(e);N_GUARD,XR(K)::QAR2(C)
- Q(e);SBLOCK::QAB1(C)
- Q(e);N_GUARD::R(K)+B(I),XQ(e)
- Q(e);N_GUARD,P_PINP(E)::R(K)+B(I)
- Q(e);N_GUARD::R(K)+B(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).