MESON Chess Problem Database
Problem Display
PID: 276437 (8/p2K1p2/2QP3P/4P3/2pk2NB/n1nP1Rp1/1P2R2b/5N2 w - - 0 1)
Melnikov, Vladimir N
Mat, 1981
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Sab1
- 2.Qxc4#
- 1...Sc2
- 2.Qxc4#
- 1...Sab5
- 2.Qxc4#
- 1...Scb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sa2
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Scb5
- 2.Re4#
- 1...Sd5
- 2.Re4#
- 1...g2
- 2.Bf2#
- 1...cxd3
- 2.bxc3#
- 1...Sab1
- Tries
- 1.Sfe3?
- threat
- 2.Sf5#
- 1...f5
- 2.Sxf5#
- 1...Kxd3!
- threat
- 1.Sxg3?
- threat
- 2.Sf5#
- 1...f5
- 2.Sxf5#
- 1...Bxg3!
- threat
- 1.Sf6?
- 1...Sxe2
- 2.Qd5#
- 1...cxd3
- 2.Qxc3#
- 2.bxc3#
- 1...Se4
- 2.Rxe4#
- 2.Qd5#
- 1...Sab1
- 2.Qxc4#
- 1...Sc2
- 2.Qxc4#
- 1...Sab5
- 2.Qxc4#
- 1...Scb1
- 2.Re4#
- 2.Qd5#
- 1...Sd1
- 2.Re4#
- 2.Qd5#
- 1...Sa2
- 2.Re4#
- 2.Qd5#
- 1...Sa4
- 2.Re4#
- 2.Qd5#
- 1...Scb5
- 2.Re4#
- 2.Qd5#
- 1...Sd5
- 2.Re4#
- 2.Qxd5#
- 1...g2
- 2.Bf2#
- 1...a5
- 2.Qb6#
- 1...a6
- 2.Qb6#
- 1...Bg1!
- 1...Sxe2
- 1.Bf6?
- threat
- 2.e6#
- 1...Se4
- 2.Rxe4#
- 1...Sd5
- 2.Re4#
- 1...g2!
- threat
- 1.Rd2?
- threat
- 2.dxc4#
- 1...cxd3
- 2.Rdxd3#
- 2.Rfxd3#
- 2.bxc3#
- 1...Sab1
- 2.Qxc4#
- 1...Scb1
- 2.Rf4#
- 1...Se4
- 2.dxe4#
- 1...Sd5!
- threat
- 1.Rf4+?
- 1...Kxd3
- 2.Rd2#
- 2.Qf3#
- 1...Se4!
- 1...Kxd3
- 1.Qb6+?
- 1...Kd5
- 2.Sfe3#
- 2.Sf6#
- 1...axb6!
- 1...Kd5
- 1.dxc4?
- threat
- 2.Rd2#
- 2.bxc3#
- 1...Sxc4
- 2.bxc3#
- 1...Sxe2
- 2.Qd5#
- 1...Sab5
- 2.Rd2#
- 1...Scb1
- 2.Re4#
- 2.Qd5#
- 1...Sd1
- 2.Rd2#
- 2.Re4#
- 2.Qd5#
- 1...Sa2
- 2.Rd2#
- 2.Re4#
- 2.Qd5#
- 1...Sa4
- 2.Rd2#
- 2.Re4#
- 2.Qd5#
- 1...Se4
- 2.Rxe4#
- 2.Qd5#
- 1...Scb5
- 2.Rd2#
- 2.Re4#
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sab1!
- threat
- 1.e6?
- threat
- 2.Bf6#
- 1...Se4
- 2.Rxe4#
- 1...Sd5
- 2.Re4#
- 1...g2
- 2.Bf2#
- 1...f6
- 2.Bxf6#
- 1...fxe6!
- threat
- 1.Sfe3?
- Keys
- 1.Sge3!
- threat
- 2.Sf5#
- 1...Kxd3
- 2.Rd2#
- 1...Kxe5
- 2.Bf6#
- 1...Sxe2
- 2.Qd5#
- 1...Se4
- 2.Qd5#
- 1...f5
- 2.Sxf5#
- threat
- 1.Sge3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- S(b);N_GUARD::QAR1(I),XP(e)
- S(c);N_GUARD::R1(C)
- S(c);N_GUARD::R1(C),XS(c)
- P(d);OGATE::B(G)
- P(e);XP(D)::P(B),XS(c)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- P(h);::S(A),XP(h)
- Refutation
- K(f);P-FLIGHT,XP(D)
- Try
- S(A);XP(d)
- Threat
- S(A)
- Vars
- P(h);::S(A),XP(h)
- Refutation
- B(a);XS(A)
- Try
- S(F);
- Vars
- S(c);N_GUARD,XR(C)::QAR1(I)
- S(b);N_GUARD::QAR1(I),XP(e)
- P(d);OGATE::B(G)
- P(g);N_GUARD::QAB(I)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- B(G)+P(H)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- S(c);N_GUARD::R1(C)
- Refutation
- P(d);
- Try
- R(C);
- Threat
- R(C)+P(D),XP(e)
- Vars
- S(b);N_GUARD::QAR1(I),XP(e)
- S(c);N_GUARD::R(E)
- S(c);OGATE::R(C)+P(D),XS(c)
- Refutation
- S(c);
- Try
- R(E);CHECK
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(I);CHECK
- Refutation
- P(g);XQ(I)
- Try
- P(D);XP(e)
- Threat
- DUALS(2)
- Vars
- S(b);XP(D)::P(B),XS(c)
- S(c);N_GUARD,XR(C)::QAR1(I)
- S(b);::R(C)
- S(c);N_GUARD::QAR1(I),XS(c)
- Refutation
- S(b);
- Try
- P(H);
- Threat
- B(G)
- Vars
- S(c);N_GUARD::R1(C),XS(c)
- S(c);N_GUARD::R1(C)
- P(d);OGATE::B(G)
- P(h);::B(G),XP(h)
- Refutation
- P(h);XP(H)
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- K(f);OGATEB,P-FLIGHT,XP(D)::R1(C)
- K(f);OGATEB,S_FLIGHT,XP(H)::B(G)
- S(c);N_GUARD,XR(C)::QAR1(I)
- S(c);N_GUARD::QAR1(I)
- P(h);::S(F),XP(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).