MESON Chess Problem Database
Problem Display
PID: 16263 (5Q2/K1n3p1/3R4/1p2B1r1/p3k2r/1p2NN2/qb2BP2/4n3 w - - 0 1)
Mazul, Waldemar
The Problemist, 2000
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qf4#
- 1...Rh2
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rhh5
- 2.Qf4#
- 1...Rh6
- 2.Qf4#
- 1...Rh7
- 2.Qf4#
- 1...Rh8
- 2.Qf4#
- 1...Rg1
- 2.Qf5#
- 1...Rg2
- 2.Qf5#
- 1...Rg3
- 2.Qf5#
- 1...Rg4
- 2.Qf5#
- 1...Rxe5
- 2.Sd2#
- 1...Rf5
- 2.Qxf5#
- 1...Rg6
- 2.Qf5#
- 1...Bc1
- 2.Rd4#
- 1...Ba3
- 2.Rd4#
- 1...Bd4+
- 2.Rxd4#
- 1...Bxe5
- 2.Sxg5#
- 1...Sc2
- 2.Bd3#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sa6
- 2.Qa8#
- 1...Se6
- 2.Qa8#
- 1...Sa8
- 2.Qxa8#
- 1...Rh1
- Tries
- 1.Sc4?
- threat
- 2.Sfd2#
- 2.Sxg5#
- 2.Scd2#
- 1...Bd4+
- 2.Rxd4#
- 1...Rxe5
- 2.Sfd2#
- 2.Scd2#
- 1...Bxe5
- 2.Sxg5#
- 1...Sxf3
- 2.Bd3#
- 2.Bxf3#
- 2.Qxf3#
- 1...Rhg4
- 2.Sfd2#
- 2.Scd2#
- 1...Rhh5
- 2.Sfd2#
- 2.Scd2#
- 2.Qf4#
- 1...Rg1
- 2.Sfd2#
- 2.Scd2#
- 1...Rg2
- 2.Sfd2#
- 2.Scd2#
- 1...Rg3
- 2.Sfd2#
- 2.Scd2#
- 1...Rgg4
- 2.Sfd2#
- 2.Scd2#
- 1...Rf5
- 2.Sfd2#
- 2.Scd2#
- 1...Rgh5
- 2.Sfd2#
- 2.Scd2#
- 1...Rg6
- 2.Sfd2#
- 2.Scd2#
- 1...Ba1
- 2.Sxg5#
- 1...Bc1
- 2.Rd4#
- 1...Ba3
- 2.Sxg5#
- 2.Rd4#
- 1...Bc3
- 2.Sxg5#
- 1...Se6
- 2.Sfd2#
- 2.Scd2#
- 1...bxc4!
- threat
- 1.Rd5?
- threat
- 2.Sd2#
- 2.Sxg5#
- 1...Bd4+
- 2.Rxd4#
- 1...Rxe5
- 2.Sd2#
- 1...Bxe5
- 2.Sxg5#
- 1...Sxf3
- 2.Bd3#
- 2.Bxf3#
- 2.Qxf3#
- 1...Rhg4
- 2.Sd2#
- 1...Rhh5
- 2.Sd2#
- 2.Qf4#
- 1...Rg1
- 2.Sd2#
- 2.Qf5#
- 1...Rg2
- 2.Sd2#
- 2.Qf5#
- 1...Rg3
- 2.Sd2#
- 2.Qf5#
- 1...Rgg4
- 2.Sd2#
- 2.Qf5#
- 1...Rf5
- 2.Sd2#
- 2.Qxf5#
- 1...Rgh5
- 2.Sd2#
- 1...Rg6
- 2.Sd2#
- 2.Qf5#
- 1...Ba1
- 2.Sxg5#
- 1...Bc1
- 2.Sxg5#
- 2.Rd4#
- 2.Qb4#
- 1...Ba3
- 2.Sxg5#
- 2.Rd4#
- 1...Bc3
- 2.Sxg5#
- 1...Se6
- 2.Sd2#
- 1...Sxd5!
- threat
- 1.Re6?
- threat
- 2.Sd2#
- 2.Sxg5#
- 1...Rxe5
- 2.Qf5#
- 1...Bxe5
- 2.Qb4#
- 1...Sxf3
- 2.Qxf3#
- 1...Sxe6
- 2.Qa8#
- 1...Rhg4
- 2.Sd2#
- 1...Rhh5
- 2.Sd2#
- 2.Qf4#
- 1...Rg1
- 2.Sd2#
- 2.Qf5#
- 1...Rg2
- 2.Sd2#
- 2.Qf5#
- 1...Rg3
- 2.Sd2#
- 2.Qf5#
- 1...Rgg4
- 2.Sd2#
- 2.Qf5#
- 1...Rf5
- 2.Sd2#
- 2.Qxf5#
- 1...Rgh5
- 2.Sd2#
- 1...Rg6
- 2.Sd2#
- 2.Qf5#
- 1...Ba1
- 2.Sxg5#
- 1...Bc1
- 2.Sxg5#
- 2.Qb4#
- 1...Ba3
- 2.Sxg5#
- 1...Bc3
- 2.Sxg5#
- 1...Bd4+!
- threat
- 1.Qf6?
- threat
- 2.Sd2#
- 2.Sxg5#
- 1...Bd4+
- 2.Rxd4#
- 1...Rxe5
- 2.Sd2#
- 2.Qxh4#
- 1...Bxe5
- 2.Sxg5#
- 1...Sxf3
- 2.Bd3#
- 2.Bxf3#
- 1...Rhg4
- 2.Sd2#
- 1...Rhh5
- 2.Sd2#
- 2.Qf4#
- 1...Rg1
- 2.Sd2#
- 2.Qf5#
- 1...Rg2
- 2.Sd2#
- 2.Qf5#
- 1...Rg3
- 2.Sd2#
- 2.Qf5#
- 1...Rgg4
- 2.Sd2#
- 2.Qf5#
- 1...Rf5
- 2.Sd2#
- 2.Qxf5#
- 1...Rgh5
- 2.Sd2#
- 1...Rg6
- 2.Sd2#
- 2.Qf5#
- 2.Qxg6#
- 1...Ba1
- 2.Sxg5#
- 1...Bc1
- 2.Sxg5#
- 2.Rd4#
- 1...Ba3
- 2.Sxg5#
- 2.Rd4#
- 1...Bc3
- 2.Sxg5#
- 1...Se6
- 2.Sd2#
- 1...gxf6!
- threat
- 1.Qa8+?
- 1...Sd5
- 2.Qxd5#
- 1...Sxa8!
- 1...Sd5
- 1.Sc4?
- Keys
- 1.Qe7!
- threat
- 2.Sd2#
- 2.Sxg5#
- 1...Bd4+
- 2.Rxd4#
- 1...Rxe5
- 2.Qxh4#
- 1...Bxe5
- 2.Rd4#
- 1...Sxf3
- 2.Bd3#
- 1...Rhg4
- 2.Sd2#
- 1...Rhh5
- 2.Sd2#
- 1...Rg1
- 2.Sd2#
- 1...Rg2
- 2.Sd2#
- 1...Rg3
- 2.Sd2#
- 1...Rgg4
- 2.Sd2#
- 1...Rf5
- 2.Sd2#
- 1...Rgh5
- 2.Sd2#
- 1...Rg6
- 2.Sd2#
- 1...Ba1
- 2.Sxg5#
- 1...Bc1
- 2.Sxg5#
- 2.Rd4#
- 1...Ba3
- 2.Sxg5#
- 2.Rd4#
- 1...Bc3
- 2.Sxg5#
- 1...Se6
- 2.Qb7#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 10
- ADDED MATES = 5
- REMOVED MATES = 14
- Sets
- R(g);N_GUARD::QAR1(H)
- R(g);N_GUARD::QAR1(H),XR(g)
- R(i);N_GUARD::QAB1(H)
- R(i);SBLOCK,XB(E)::S(D)
- R(i);N_GUARD::QAB1(H),XR(i)
- B(c);N_GUARD::R1(F)
- B(c);CHECK,N_GUARD::R1(F),XB(c)
- B(c);SBLOCK,XB(E)::S(D),XR(i)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(j);N_GUARD::QAB(H)
- S(j);N_GUARD::QAB(H),XS(j)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- B(c);CHECK,N_GUARD::R1(F),XB(c)
- B(c);XB(E)::S(D),XR(i)
- B(c);::S(D),XR(i)
- B(c);N_GUARD::R1(F)
- Refutation
- P(h);XS(C)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,N_GUARD::R1(F),XB(c)
- R(i);XB(E)::S(D)
- B(c);XB(E)::S(D),XR(i)
- R(g);::S(D)
- R(i);::S(D)
- B(c);::S(D),XR(i)
- S(j);::S(D)
- Refutation
- S(j);XR(F)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(i);N_GUARD,P_SPINR(i),XB(E)::QAB1(H)
- B(c);N_GUARD,P_SPINB(c),XB(E)::QAR(H)
- S(a);OGATE,XS(D)::QAB1(H),XS(a)
- S(j);N_GUARD,XR(F)::QAB(H)
- R(g);::S(D)
- R(i);::S(D)
- B(c);::S(D),XR(i)
- Refutation
- B(c);CHECK
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,N_GUARD::R1(F),XB(c)
- B(c);XB(E)::S(D),XR(i)
- R(g);::S(D)
- R(i);::S(D)
- B(c);::S(D),XR(i)
- S(j);::S(D)
- Refutation
- P(k);XQ(H)
- Try
- Q(H);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAB1(H),XS(j)
- Refutation
- S(j);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,N_GUARD::R1(F),XB(c)
- R(i);OGATE,P_SPINR(i),XB(E)::QAR(H),XR(g)
- B(c);N_GUARD,P_SPINB(c),XB(E)::R1(F)
- S(a);N_GUARD,SBLOCK,XS(D)::B(A)
- R(g);::S(D)
- R(i);::S(D)
- B(c);::S(D),XR(i)
- S(j);OGATE::QAB(H)
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).