MESON Chess Problem Database
Problem Display
PID: 145285 (4R1n1/p2q4/1p1Q1p2/1P1p1pP1/1rNk1pPN/1rR3b1/1PP1P3/4BKnB w - - 0 1)
van Gool, Johann Christoffel
3rd Prize, Cheron MT, 1985
#2
14 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.Sxf5#
- 1...Qc6
- 2.Sxf5#
- 1...Qc8
- 2.Qxd5#
- 1...Qxe8
- 2.Sxf5#
- 2.Qxd5#
- 1...Qb7
- 2.Sxf5#
- 1...Qc7
- 2.Sxf5#
- 2.Qxd5#
- 1...Qe7
- 2.Sxf5#
- 2.Qxd5#
- 1...Qf7
- 2.Sxf5#
- 1...Qg7
- 2.Sxf5#
- 2.Qxd5#
- 1...Qh7
- 2.Qxd5#
- 1...Qd8
- 2.Sxf5#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Sxe2
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...f3
- 2.e3#
- 1...fxg4
- 2.Re4#
- 1...a5
- 2.Qxb6#
- 1...a6
- 2.Qxb6#
- 1...Qxb5
- Tries
- 1.Sxb6?
- threat
- 2.Qc5#
- 1...Qxb5
- 2.Sxf5#
- 1...Qxe8
- 2.Sxf5#
- 2.Qxd5#
- 1...Qxd6
- 2.Sxf5#
- 1...Rxc3
- 2.Bxc3#
- 2.bxc3#
- 1...Rxb5
- 2.Rc4#
- 1...axb6
- 2.Qxb6#
- 1...Qc6
- 2.Sxf5#
- 1...Qc8
- 2.Qxd5#
- 1...Qc7
- 2.Sxf5#
- 2.Qxd5#
- 1...Qe7
- 2.Sxf5#
- 2.Qxd5#
- 1...Rc4
- 2.Rxc4#
- 1...Se7
- 2.Qxf6#
- 1...Qe6!
- threat
- 1.Sxb6?
- Keys
- 1.Sa5!
- 1...Qxb5
- 2.Sxf5#
- 1...Qxe8
- 2.Sxf5#
- 2.Qxd5#
- 1...Qxd6
- 2.Sxf5#
- 1...Rxb2
- 2.Rd3#
- 1...Rxc3
- 2.Bxc3#
- 2.bxc3#
- 1...Rxb5
- 2.Rc4#
- 1...Bxe1
- 2.Qxf4#
- 1...Bxh4
- 2.Qxf4#
- 1...Sxe2
- 2.Sf3#
- 1...fxg4
- 2.Re4#
- 1...bxa5
- 2.Qc5#
- 1...fxg5
- 2.Qe5#
- 1...Qe6
- 2.Sc6#
- 1...Qc6
- 2.Sxf5#
- 2.Sxc6#
- 1...Qc8
- 2.Qxd5#
- 1...Qb7
- 2.Sxf5#
- 1...Qc7
- 2.Sxf5#
- 2.Qxd5#
- 1...Qe7
- 2.Sxf5#
- 2.Sc6#
- 2.Qxd5#
- 1...Qf7
- 2.Sxf5#
- 2.Sc6#
- 1...Qg7
- 2.Sxf5#
- 2.Sc6#
- 2.Qxd5#
- 1...Qh7
- 2.Sc6#
- 2.Qxd5#
- 1...Qd8
- 2.Sxf5#
- 2.Sc6#
- 1...Ra3
- 2.Qxb4#
- 1...Ra4
- 2.Sxb3#
- 1...Rc4
- 2.Sxb3#
- 2.Rxc4#
- 1...Bf2
- 2.Bxf2#
- 2.Qxf4#
- 1...Bh2
- 2.Bf2#
- 1...Sf3
- 2.Sxf3#
- 1...Sh3
- 2.Sf3#
- 1...Sh6
- 2.Qxf6#
- 1...Se7
- 2.Qxf6#
- 1...f3
- 2.e3#
- 1...a6
- 2.Qxb6#
- 1...Qxb5
- 1.Sa5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 6
- Sets
- Q(l);N_GUARD,XP(K)::S(J),XP(h)
- Q(l);N_GUARD::S(J),XP(h)
- Q(l);N_GUARD::QAR1(M),XP(g)
- B(c);N_GUARD::B(A),XB(c)
- B(c);N_GUARD::B(A)
- S(a);N_GUARD,XP(F)::S(J)
- S(a);N_GUARD::S(J),XS(a)
- S(a);N_GUARD::S(J)
- P(f);N_GUARD::P(F)
- P(h);N_GUARD,XP(I)::R1(N)
- P(k);N_GUARD::QAB(M),XP(i)
- Tries
- Try
- S(H);XP(i)
- Threat
- QAB1(M)
- Vars
- Q(l);N_GUARD,P_PINP(F),XP(K)::S(J),XP(h)
- Q(l);N_GUARD,N_SPINP(g),XQ(M)::S(J),XP(h)
- R(d);N_GUARD,XP(K)::R1(G)
- P(k);OGATE,XS(H)::QAB(M),XP(k)
- Q(l);N_GUARD::S(J),XP(h)
- Q(l);N_GUARD::QAR1(M),XP(g)
- R(d);N_GUARD::R1(G),XR(d)
- S(m);N_GUARD::QAB(M),XP(j)
- Refutation
- Q(l);
- Try
- Actual
- S(H);
- Vars
- Q(l);N_GUARD,P_PINP(F),XP(K)::S(J),XP(h)
- Q(l);N_GUARD,N_SPINP(g),XQ(M)::S(J),XP(h)
- R(b);N_GUARD,XP(D)::R1(G)
- R(d);N_GUARD,XP(K)::R1(G)
- B(c);N_GUARD,XB(A)::QAR2(M),XP(f)
- B(c);N_GUARD,XS(J)::QAR2(M),XP(f)
- S(a);N_GUARD,XP(F)::S(J)
- P(h);N_GUARD,XP(I)::R1(N)
- P(i);N_GUARD,XS(H)::QAB1(M)
- P(j);N_GUARD,XP(L)::QAB1(M)
- Q(l);N_GUARD::S(H)
- Q(l);N_GUARD::QAR1(M),XP(g)
- Q(l);N_GUARD::S(J),XP(h)
- R(b);N_GUARD::QAR2(M),XR(d)
- R(d);N_GUARD::S(H),XR(b)
- B(c);N_GUARD::B(A)
- S(a);N_GUARD::S(J),XS(a)
- S(a);N_GUARD::S(J)
- S(m);N_GUARD::QAB(M),XP(j)
- P(f);N_GUARD::P(F)
- P(k);N_GUARD::QAB(M),XP(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).