MESON Chess Problem Database
Problem Display
PID: 80905 (n7/1Q2p3/1P1PPP2/pk1Kp2R/1p1B1P2/1P2bp2/3pqp2/5B2 w - - 0 1)
Masek, Zdenek
2nd Prize, Quickle, 1980
#2
11 + 11
| 6424 | Czech Album (1979-1981) | 1986 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Bxd3#
- 1...Qc4+
- 2.Bxc4#
- 1...Sxb6+
- 2.Qxb6#
- 1...Sc7+
- 2.bxc7#
- 1...exd4
- 2.Ke4#
- 1...exf4
- 2.Ke4#
- 1...e4
- 2.Kxe4#
- 1...Qd3
- Tries
- 1.dxe7?
- threat
- 2.e8Q#
- 2.e8B#
- 1...Qc4+
- 2.Bxc4#
- 1...Sxb6+
- 2.Qxb6#
- 1...Sc7+
- 2.bxc7#
- 1...Qxf1
- 2.e8Q#
- 2.e8B#
- 1...Bxd4
- 2.e8Q#
- 2.e8B#
- 1...Bxf4
- 2.e8Q#
- 2.e8B#
- 1...exd4
- 2.Ke4#
- 2.Kd6#
- 2.e8Q#
- 2.e8B#
- 1...exf4
- 2.Ke4#
- 2.Kd6#
- 2.e8Q#
- 2.e8B#
- 1...d1Q
- 2.e8Q#
- 2.e8B#
- 1...d1S
- 2.e8Q#
- 2.e8B#
- 1...d1B
- 2.e8Q#
- 2.e8B#
- 1...d1R
- 2.e8Q#
- 2.e8B#
- 1...Qd3
- 2.Bxd3#
- 2.e8Q#
- 2.e8B#
- 1...e4
- 2.Kxe4#
- 2.Kd6#
- 2.e8Q#
- 2.e8B#
- 1...a4!
- threat
- 1.fxe7?
- threat
- 2.e8Q#
- 2.e8B#
- 1...Qc4+
- 2.Bxc4#
- 1...Sxb6+
- 2.Qxb6#
- 1...Sc7+
- 2.bxc7#
- 1...Qxf1
- 2.e8Q#
- 2.e8B#
- 1...Bxd4
- 2.e8Q#
- 2.e8B#
- 1...Bxf4
- 2.e8Q#
- 2.e8B#
- 1...exd4
- 2.Ke4#
- 2.e8Q#
- 2.e8B#
- 1...exf4
- 2.Ke4#
- 2.e8Q#
- 2.e8B#
- 1...d1Q
- 2.e8Q#
- 2.e8B#
- 1...d1S
- 2.e8Q#
- 2.e8B#
- 1...d1B
- 2.e8Q#
- 2.e8B#
- 1...d1R
- 2.e8Q#
- 2.e8B#
- 1...Qd3
- 2.Bxd3#
- 2.e8Q#
- 2.e8B#
- 1...e4
- 2.Kxe4#
- 2.e8Q#
- 2.e8B#
- 1...a4!
- threat
- 1.dxe7?
- Keys
- 1.Kxe5!
- threat
- 2.Ke4#
- 1...Bxd4+
- 2.Kxd4#
- 1...Bxf4+
- 2.Kxf4#
- 1...exd6+
- 2.Kxd6#
- 1...exf6+
- 2.Kxf6#
- 1...Qd3
- 2.Bxd3#
- 1...Sc7
- 2.bxc7#
- threat
- 1.Kxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(b);OGATE,P_PINB(C)::B(A),XQ(b)
- Q(b);CHECK,OGATE::B(A),XQ(b)
- S(k);CHECK,OGATE,P_SPINS(k),XP(G)::QAR1(K),XS(k)
- S(k);CHECK,OGATE::QAR(K)+P(G),XS(k)
- P(i);XB(C)::R(F)+K(E)
- P(i);XP(D)::R(F)+K(E)
- P(i);::R(F)+K(E),XP(i)
- Tries
- Try
- P(H);XP(j)
- Threat
- P=Q
- Vars
- Q(b);CHECK,OGATE::B(A),XQ(b)
- S(k);CHECK,OGATE,P_SPINS(k),XP(G)::QAR1(K),XS(k)
- S(k);CHECK,OGATE::QAR(K)+P(G),XS(k)
- Q(b);N_SPINQ(b),XB(A)::P=Q
- B(d);XB(C)::P=Q
- B(d);XP(D)::P=Q
- P(a);P_PINB(C)::P=Q
- P(a);::P=Q
- Refutation
- P(g);
- Try
- P(J);XP(j)
- Threat
- P=Q
- Vars
- Q(b);CHECK,OGATE::B(A),XQ(b)
- S(k);CHECK,OGATE,P_SPINS(k),XP(G)::QAR1(K),XS(k)
- S(k);CHECK,OGATE::QAR(K)+P(G),XS(k)
- Q(b);N_SPINQ(b),XB(A)::P=Q
- B(d);XB(C)::P=Q
- B(d);XP(D)::P=Q
- P(a);P_PINB(C)::P=Q
- P(a);::P=Q
- Refutation
- P(g);
- Try
- Actual
- K(E);P-FLIGHT,XP(i)
- Threat
- R(F)+K(E)
- Vars
- B(d);CHECK,XB(C)::R(F)+K(E),XB(d)
- B(d);CHECK,XP(D)::R(F)+K(E),XB(d)
- P(j);CHECK,XP(H)::R(F)+K(E),XP(j)
- P(j);CHECK,XP(J)::R(F)+K(E),XP(j)
- Q(b);OGATE::B(A),XQ(b)
- S(k);OGATE::QAR(K)+P(G),XS(k)
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).