MESON Chess Problem Database
Problem Display
PID: 149514 (b3N3/q1pK1pP1/1pP1p3/2pk4/B2B1prb/1pP5/4QPN1/n1r5 w - - 0 1)
Dikusarov, Andrey Nikolayovich
Troll, 2012
#2
10 + 14
SOLUTION
- SOUND
- Sets
- 1...Qxa4
- 2.Sxc7#
- 1...Qa5
- 2.Sxc7#
- 1...Qa6
- 2.Sxc7#
- 1...Rg3
- 2.Sxf4#
- 1...Rg5
- 2.Sxf4#
- 2.Sf6#
- 1...Rg6
- 2.Sxf4#
- 1...Rxg7
- 2.Sxf4#
- 1...Bxf2
- 2.Sf6#
- 1...Bg3
- 2.Sf6#
- 1...Bf6
- 2.Sxf6#
- 1...Bxc6+
- 2.Bxc6#
- 1...Bb7
- 2.Sxc7#
- 1...c4
- 2.Qf3#
- 2.Qe5#
- 1...f5
- 2.Qxe6#
- 1...f6
- 2.Qxe6#
- 1...Qxa4
- Tries
- 1.Se3+?
- 1...Ke4
- 2.f3#
- 1...fxe3!
- 1...Ke4
- 1.Sd6?
- threat
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 2.Qe5#
- 1...Bxc6+
- 2.Bxc6#
- 1...Qxa4
- 2.Qf3#
- 2.Qe4#
- 2.Qe5#
- 1...Rxc3
- 2.Qe4#
- 2.Qe5#
- 1...cxd4
- 2.Qb5#
- 1...Qa6
- 2.Qf3#
- 2.Qe4#
- 2.Qe5#
- 1...Re1
- 2.Qc4#
- 1...Rg3
- 2.Sxf4#
- 2.Qc4#
- 2.Qe4#
- 2.Qe5#
- 1...Rg5
- 2.Sxf4#
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Bf6
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...f3
- 2.Se3#
- 2.Qc4#
- 2.Qe5#
- 1...c4
- 2.Qf3#
- 2.Qxc4#
- 2.Qe4#
- 2.Qe5#
- 1...b5
- 2.Qf3#
- 2.Qe4#
- 2.Qe5#
- 1...e5
- 2.Qc4#
- 2.Qe4#
- 2.Qxe5#
- 1...f5
- 2.Qf3#
- 2.Qc4#
- 2.Qe5#
- 2.Qxe6#
- 1...f6
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 2.Qxe6#
- 1...cxd6+!
- threat
- 1.Bxb3+?
- 1...c4
- 2.Bxc4#
- 2.Qf3#
- 2.Qe5#
- 1...Sxb3!
- 1...c4
- 1.Bb5?
- threat
- 2.Bc4#
- 2.Qf3#
- 2.Qe5#
- 1...Bxc6+
- 2.Bxc6#
- 1...Rxc3
- 2.Qe5#
- 1...Qa4
- 2.Sxc7#
- 2.Qf3#
- 2.Qe5#
- 1...Qa6
- 2.Sxc7#
- 2.Qf3#
- 2.Qe5#
- 1...Re1
- 2.Bc4#
- 1...Rg3
- 2.Sxf4#
- 2.Bc4#
- 2.Qe5#
- 1...Rg5
- 2.Sxf4#
- 2.Sf6#
- 2.Bc4#
- 2.Qf3#
- 1...Bf6
- 2.Sxf6#
- 2.Bc4#
- 2.Qf3#
- 1...f3
- 2.Bc4#
- 2.Qe5#
- 1...c4
- 2.Bxc4#
- 2.Qf3#
- 2.Qe5#
- 1...e5
- 2.Bc4#
- 2.Qxe5#
- 1...f6
- 2.Bc4#
- 2.Qf3#
- 2.Qxe6#
- 1...cxd4!
- threat
- 1.Qe4+?
- 1...Kc4
- 2.Be5#
- 2.Bf6#
- 1...Kxe4!
- 1...Kc4
- 1.c4+?
- 1...Rxc4
- 2.Qe5#
- 1...Kxd4!
- 1...Rxc4
- 1.Se3+?
- Keys
- 1.Qd3!
- threat
- 2.Bf6#
- 1...Bxc6+
- 2.Bxc6#
- 1...Qxa4
- 2.Sxc7#
- 1...Rxc3
- 2.Bxc3#
- 1...Bxf2
- 2.Sf6#
- 1...cxd4
- 2.Qxd4#
- 1...Qa6
- 2.Sxc7#
- 1...Rd1
- 2.c4#
- 1...Rg3
- 2.Sxf4#
- 1...Bf6
- 2.Sxf6#
- 2.Bxf6#
- 1...Sc2
- 2.c4#
- 1...f3
- 2.Se3#
- 1...c4
- 2.Qf3#
- 1...e5
- 2.Be3#
- 1...f6
- 2.Bxf6#
- threat
- 1.Qd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- Q(k);N_GUARD,P_PINP(G),XB(E)::S(J),XP(l)
- Q(k);N_GUARD::S(J),XP(l)
- R(e);N_GUARD::S(C),XP(d)
- R(e);N_GUARD,XP(I)::S(C),XP(d)
- B(f);N_GUARD,XP(B)::S(J)
- B(f);N_GUARD::S(J)
- B(f);N_GUARD::S(J),XB(f)
- B(n);CHECK,OGATE,XP(G)::B(E),XB(n)
- B(n);S_CUTQ(k)::S(J),XP(l)
- P(m);N_GUARD::QAB1(A),XP(j)
- Tries
- Try
- S(C);CHECK
- Vars
- K(h);S_FLIGHT::P(B)
- Refutation
- P(d);XS(C)
- Try
- S(J);
- Threat
- DUALS(4)
- Vars
- B(n);CHECK,OGATE,XP(G)::B(E),XB(n)
- P(g);OGATEB,XB(F)::QAR2(A)
- R(b);::QAB1(A)
- Refutation
- P(l);CHECK,XS(J)
- Try
- B(E);CHECK,XP(c)
- Refutation
- S(a);XB(E)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- B(n);CHECK,OGATE,XP(G)::B(E),XB(n)
- R(b);XP(D)::QAR1(A)
- R(b);::B(E)
- Refutation
- P(g);XB(F)
- Try
- Q(A);CHECK
- Refutation
- K(h);S_FLIGHT,XQ(A)
- Try
- P(D);CHECK
- Vars
- R(b);SBLOCK,XP(D)::QAR1(A)
- Refutation
- K(h);P-FLIGHT,XB(F)
- Try
- Actual
- Q(A);
- Threat
- QAR(A)+B(F)
- Vars
- B(n);CHECK,OGATE,XP(G)::B(E),XB(n)
- Q(k);N_GUARD,P_PINP(G),XB(E)::S(J),XP(l)
- R(b);OGATE,XP(D)::QAR(A)+B(F),XR(b)
- B(f);N_GUARD,XP(B)::S(J)
- P(g);OGATE,P_SPINP(g),XB(F)::QAR1(A),XP(g)
- Q(k);N_GUARD::S(J),XP(l)
- R(b);N_GUARD::P(D)
- R(e);N_GUARD::S(C),XP(d)
- S(a);S_CUTR(b)::P(D)
- P(d);N_GUARD::S(C)
- P(g);SBLOCK::QAB(A)
- P(j);SBLOCK::QAR(A)+B(F)
- P(m);::QAR(A)+B(F),XP(m)
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).