MESON Chess Problem Database
Problem Display
PID: 7158 (q7/2p2R2/r3n2B/2pR1P2/3PkP1p/bQ2p3/p1P4n/1b1BNN1K w - - 0 1)
Vahlakov, Yuri Nikoleyevich
Vlasov, Mikhail
Probleemblad, 1998
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxd5
- 2.Qd3#
- 2.Qxe3#
- 1...Bxc2
- 2.Bxc2#
- 1...Sxf1
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg4
- 2.Bf3#
- 1...Sxd4
- 2.Re5#
- 1...e2
- 2.Sd2#
- 1...h3
- 2.Sg3#
- 1...cxd4
- 2.Re5#
- 1...Qxd5
- Tries
- 1.Kxh2?
- threat
- 2.Bf3#
- 1...Qxd5
- 2.Qd3#
- 2.Qxe3#
- 1...Sxd4
- 2.Re5#
- 1...e2
- 2.Sd2#
- 2.Qf3#
- 1...Sg5!
- threat
- 1.Sxh2?
- threat
- 2.Bf3#
- 1...Qxd5
- 2.Qd3#
- 1...Sxd4
- 2.Re5#
- 1...e2
- 2.Qf3#
- 1...Sg5!
- threat
- 1.Rdd7?
- threat
- 2.Qd3#
- 2.Qxe3#
- 1...Bxc2
- 2.Bxc2#
- 2.Qxc2#
- 2.Qxe3#
- 1...Sxf1
- 2.Bf3#
- 2.Qd3#
- 1...Sxf4
- 2.Qxe3#
- 1...cxd4
- 2.Qd3#
- 1...Sg5
- 2.Qxe3#
- 1...Bc1
- 2.Qd3#
- 1...Sg4
- 2.Bf3#
- 2.Qd3#
- 1...e2
- 2.Sd2#
- 2.Qd3#
- 2.Qe3#
- 1...c4
- 2.Qxe3#
- 1...Rd6!
- threat
- 1.Rfd7?
- threat
- 2.Re5#
- 2.Qd3#
- 2.Qxe3#
- 1...Qxd5
- 2.Qxd5#
- 2.Qd3#
- 1...Bxc2
- 2.Bxc2#
- 2.Re5#
- 2.Qxc2#
- 2.Qxe3#
- 1...Sxf1
- 2.Bf3#
- 2.Re5#
- 2.Qd3#
- 1...Sxf4
- 2.Re5#
- 2.Qxe3#
- 1...cxd4
- 2.Re5#
- 2.Qd3#
- 1...Sg5
- 2.Qxe3#
- 1...Qh8
- 2.Qd3#
- 2.Qxe3#
- 1...Bc1
- 2.Re5#
- 2.Qd3#
- 1...Sf3
- 2.Bxf3#
- 2.Qd3#
- 2.Qxe3#
- 1...Sg4
- 2.Bf3#
- 2.Qd3#
- 1...e2
- 2.Sd2#
- 2.Re5#
- 2.Qd3#
- 2.Qe3#
- 1...c4
- 2.Re5#
- 2.Qxe3#
- 1...Rd6!
- threat
- 1.Qc4?
- threat
- 2.Re5#
- 1...Qxd5
- 2.Qd3#
- 1...Sg5
- 2.dxc5#
- 1...Sf3
- 2.Bxf3#
- 1...Sg4
- 2.Bf3#
- 1...Qh8!
- threat
- 1.c4?
- threat
- 2.Qxe3#
- 1...Sxf1
- 2.Bf3#
- 1...cxd4
- 2.Re5#
- 1...Bd3
- 2.Qxd3#
- 1...Sg4
- 2.Bf3#
- 1...e2
- 2.Sd2#
- 2.Qe3#
- 1...Bc1!
- threat
- 1.Kxh2?
- Keys
- 1.dxc5!
- threat
- 2.Qd3#
- 1...Qxd5
- 2.Qxe3#
- 1...Bxc2
- 2.Bxc2#
- 1...Sxf4
- 2.Qc4#
- 1...Sxc5
- 2.Qc4#
- 1...Sg5
- 2.Qc4#
- 1...Sd4
- 2.Re5#
- threat
- 1.dxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- B(a);OGATE,XP(E)::B(A),XB(a)
- S(c);N_GUARD,XS(C)::B(A)
- S(c);N_GUARD::B(A),XS(c)
- S(c);N_GUARD::B(A)
- S(j);SBLOCK,XP(G)::R1(I)
- P(e);N_GUARD::S(C)
- P(g);N_GUARD::S(C)
- P(h);SBLOCK,XP(G)::R1(I)
- Tries
- Try
- K(D);P-FLIGHT,XS(c)
- Threat
- B(A)
- Vars
- S(j);SBLOCK,XP(G)::R1(I)
- Refutation
- S(j);
- Try
- S(C);XS(c)
- Threat
- B(A)
- Vars
- Q(l);SBLOCK,XR(I)::QAB1(F)
- S(j);SBLOCK,XP(G)::R1(I)
- P(e);OGATE::QAB1(F)
- Refutation
- S(j);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(j);XP(H)::QAR1(F),XP(e)
- P(h);XP(G)::QAB1(F)
- S(j);::QAR1(F),XP(e)
- B(d);::QAB1(F)
- P(h);::QAR1(F),XP(e)
- Refutation
- R(i);
- Try
- R(L);
- Threat
- DUALS(3)
- Vars
- S(j);::QAR1(F),XP(e)
- Refutation
- R(i);
- Try
- Q(F);
- Threat
- R1(I)
- Vars
- Q(l);SBLOCK,XR(I)::QAB1(F)
- S(j);N_GUARD::QAR(F)+P(G),XP(h)
- S(c);N_GUARD::B(A),XS(c)
- S(c);N_GUARD::B(A)
- Refutation
- Q(l);
- Try
- P(E);
- Threat
- QAR1(F),XP(e)
- Vars
- S(c);N_GUARD,XS(C)::B(A)
- P(h);SBLOCK,XP(G)::R1(I)
- B(a);N_GUARD::QAB1(F),XB(a)
- S(c);N_GUARD::B(A)
- Refutation
- B(d);
- Try
- Actual
- P(G);XP(h)
- Threat
- QAB1(F)
- Vars
- Q(l);SBLOCK,XR(I)::QAR1(F),XP(e)
- B(a);OGATE,XP(E)::B(A),XB(a)
- S(j);N_GUARD,XP(H)::QAR2(F)
- S(j);N_GUARD,XP(G)::QAR2(F)
- S(j);N_GUARD::QAR2(F)
- S(j);SBLOCK::R1(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).