MESON Chess Problem Database
Problem Display
PID: 15293 (K3R3/3p4/5PP1/1N6/1pP1P1p1/1RpBk1P1/2PN1p2/2Bb1Q2 w - - 0 1)
Prins, Hendrik
van Gool, Johann Christoffel
8th Place, 02. WCCT, 1980-1983
#2
14 + 7
SOLUTION
- SOUND
- Sets
- 1...Bxc2
- 2.Qe2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...cxd2
- 2.Be2#
- 1...d5
- 2.exd5#
- 1...Bxc2
- Tries
- 1.Ka7?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Kb7?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Kb8?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Sd4?
- threat
- 2.S2f3#
- 2.Sf5#
- 1...Kxd4
- 2.Qxf2#
- 1...Bf3
- 2.S2xf3#
- 2.Sf5#
- 1...cxd2!
- threat
- 1.Sd6?
- threat
- 2.Sf5#
- 1...Kd4
- 2.Qxf2#
- 1...cxd2!
- threat
- 1.Re5?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Re7?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Qg2?
- threat
- 2.Sb1#
- 2.Sf1#
- 2.Sf3#
- 1...cxd2
- 2.Bf1#
- 1...f1Q
- 2.Sb1#
- 2.Sxf1#
- 2.Sf3#
- 1...f1S
- 2.Sxf1#
- 2.Qg1#
- 1...f1B
- 2.Sb1#
- 2.Sxf1#
- 2.Sf3#
- 2.Qg1#
- 1...f1R
- 2.Sb1#
- 2.Sxf1#
- 2.Sf3#
- 1...Bf3
- 2.Sb1#
- 2.Sf1#
- 2.Sxf3#
- 1...Bxc2!
- threat
- 1.c5?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 2.Bc4#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 2.Sc4#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.f7?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.g7?
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Be2#
- 1...Be2
- 2.Qxe2#
- 1...Bf3
- 2.Sb1#
- 1...d5
- 2.exd5#
- 1...d6!
- 1...Bxc2
- 1.Ka7?
- Keys
- 1.e5!
- 1...Bf3+
- 2.Se4#
- 1...Bxc2
- 2.Qe2#
- 1...cxd2
- 2.Bf5#
- 1...d6
- 2.exd6#
- 1...Be2
- 2.Qxe2#
- 1...d5
- 2.exd5 ep#
- 1...Bf3+
- 1.e5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD,XP(C)::QAR1(B)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- P(g);OGATE::R(N)+P(I),XP(g)
- Tries
- Try
- K(M);P-FLIGHT
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- K(M);S_FLIGHT
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- K(M);P-FLIGHT
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- K(d);S_FLIGHT,XS(J)::QAB(B),XP(b)
- Refutation
- P(c);P_SPINP(c),XS(D)
- Try
- S(J);
- Threat
- S(J)
- Vars
- K(d);S_FLIGHT::QAB(B),XP(b)
- Refutation
- P(c);P_SPINP(c),XS(D)
- Try
- R(N);
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- R(N);
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- Refutation
- B(a);XP(C)
- Try
- P(H);
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- B(a);N_GUARD::QAR1(B),XB(a)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- P(K);
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- P(L);
- Vars
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(a);P_PINP(I),SBLOCK::B(A)+S(D)
- P(g);OGATE::R(N)+P(I),XP(g)
- Refutation
- P(g);
- Try
- Actual
- P(I);
- Vars
- B(a);CHECK,SBLOCK::B(A)+S(D)
- B(a);N_GUARD,XP(C)::QAR1(B)
- P(c);OGATEB,P_SPINP(c),XS(D)::R(E)+B(F)
- P(g);OGATE::R(N)+P(I),XP(g)
- B(a);N_GUARD::QAR1(B),XB(a)
- P(g);OGATE::R(N)+P(I),XP(g),EP
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).