MESON Chess Problem Database
Problem Display
PID: 230286 (8/2p5/1p2pB2/3Pp1K1/N2qkPNR/1P1RP3/7P/5Q1b w - - 0 1)
Markovtsy, Vassyl Yuriovich
Zadachi i Etyudi, 2000
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sxc3#
- 1...Qxe3
- 2.Sc3#
- 1...Qxd3
- 2.Qxh1#
- 1...Qxd5
- 2.Sc3#
- 1...exf4
- 2.Rxd4#
- 1...Qc3
- Tries
- 1.Sf2+?
- 1...Kf3
- 2.Rh3#
- 2.exd4#
- 1...Kxd5!
- 1...Kf3
- 1.Bxe5?
- threat
- 2.Sf6#
- 2.Rxd4#
- 1...Kxd5
- 2.Qxh1#
- 1...Qxe3
- 2.Sc3#
- 2.Sf6#
- 1...Qxd3
- 2.Qxh1#
- 1...Qxa4
- 2.Sf6#
- 1...Qxd5
- 2.Sc3#
- 2.Sf6#
- 1...Qa1
- 2.Sf6#
- 1...Qb2
- 2.Sf6#
- 1...Qc3
- 2.Sxc3#
- 2.Sf6#
- 1...Qc5
- 2.Sf6#
- 1...Qb4
- 2.Sf6#
- 1...Qc4
- 2.Sf6#
- 1...c5
- 2.Sf6#
- 1...Qxe5+!
- threat
- 1.Be7?
- threat
- 2.Sf6#
- 1...Qxd3
- 2.Qxh1#
- 1...exf4
- 2.Rxd4#
- 1...Kxd5!
- threat
- 1.Bg7?
- threat
- 2.Sf6#
- 1...Qxd3
- 2.Qxh1#
- 1...exf4
- 2.Rxd4#
- 1...Kxd5!
- threat
- 1.Bd8?
- threat
- 2.Sf6#
- 1...Qxd3
- 2.Qxh1#
- 1...exf4
- 2.Rxd4#
- 1...Kxd5!
- threat
- 1.Bh8?
- threat
- 2.Sf6#
- 1...Qxd3
- 2.Qxh1#
- 1...exf4
- 2.Rxd4#
- 1...Kxd5!
- threat
- 1.exd4?
- threat
- 2.Sc3#
- 1...exd4
- 2.Rxd4#
- 1...Kxd5!
- threat
- 1.fxe5?
- threat
- 2.Rxd4#
- 1...Qxe3+
- 2.Sxe3#
- 1...Qxe5+
- 2.Sxe5#
- 1...Kxd5
- 2.Qxh1#
- 1...Qxd3
- 2.Qxh1#
- 1...Qxa4
- 2.Sh6#
- 1...Qxd5
- 2.Sc3#
- 2.Sh6#
- 1...Qb2
- 2.Sh6#
- 1...Qa1
- 2.Sh6#
- 1...Qc3
- 2.Sxc3#
- 2.Sh6#
- 1...Qc5
- 2.Sh6#
- 1...Qb4
- 2.Sh6#
- 1...Qc4
- 2.Sh6#
- 1...c5!
- threat
- 1.Sf2+?
- Keys
- 1.Sxe5!
- threat
- 2.Qxh1#
- 1...Qxe5+
- 2.fxe5#
- 1...Kxd5
- 2.Rxd4#
- 1...Qxe3
- 2.Sc3#
- 1...Qxd3
- 2.Qxd3#
- 1...Qa1
- 2.f5#
- 1...Qb2
- 2.f5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- threat
- 1.Sxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(b);N_GUARD::S(F),XQ(b)
- Q(b);N_GUARD,P_PINP(G),XP(E)::S(F)
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- Q(b);N_GUARD,XP(J)::S(F)
- P(d);N_GUARD,XP(G)::R1(D),XQ(b)
- Tries
- Try
- S(H);CHECK
- Refutation
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)
- Try
- B(L);XP(d)
- Threat
- DUALS(2)
- Vars
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)::QAB(A),XB(a)
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- Q(b);XS(F)::S(H)
- Q(b);::S(H)
- P(g);::S(H)
- Refutation
- Q(b);CHECK,XB(L)
- Try
- B(L);
- Threat
- S(H)
- Vars
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- P(d);N_GUARD,XP(G)::R1(D),XQ(b)
- Refutation
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)
- Try
- B(L);
- Threat
- S(H)
- Vars
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- P(d);N_GUARD,XP(G)::R1(D),XQ(b)
- Refutation
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)
- Try
- B(L);
- Threat
- S(H)
- Vars
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- P(d);N_GUARD,XP(G)::R1(D),XQ(b)
- Refutation
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)
- Try
- B(L);
- Threat
- S(H)
- Vars
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- P(d);N_GUARD,XP(G)::R1(D),XQ(b)
- Refutation
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)
- Try
- P(E);XQ(b)
- Threat
- S(F)
- Vars
- P(d);OGATE,XP(E)::R1(D),XP(d)
- Refutation
- K(c);S_FLIGHT,XP(J)
- Try
- P(G);XP(d)
- Threat
- R1(D),XQ(b)
- Vars
- Q(b);CHECK,XP(E)::R(I)+S(H),XQ(b)
- Q(b);CHECK,XP(G)::R(I)+S(H),XQ(b)
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)::QAB(A),XB(a)
- Q(b);SBLOCK,XR(D)::QAB(A),XB(a)
- Q(b);XS(F)::R(I)+S(H)
- Q(b);::R(I)+S(H)
- Refutation
- P(g);
- Try
- Actual
- S(H);XP(d)
- Threat
- QAB(A),XB(a)
- Vars
- Q(b);CHECK,OGATE,XS(H)::R(I)+P(G),XQ(b)
- K(c);P_SPINQ(b),S_FLIGHT,XP(J)::R1(D),XQ(b)
- Q(b);N_GUARD,P_PINP(G),XP(E)::S(F)
- Q(b);OGATE,XR(D)::QAB1(A),XQ(b)
- Q(b);::R(I)+P(G)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);N_GUARD::QAB1(A),XB(a)
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).