MESON Chess Problem Database
Problem Display
PID: 62782 (8/N7/BK3P2/p2pkPP1/1n1R2P1/Q2PNp2/1P2nB2/4R3 w - - 0 1)
Valuska, Jan
2nd Comm., Problem (Zagreb), 1970
#2
14 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxd4
- 2.Sc4#
- 1...Kd6
- 2.Rxd5#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sxd4
- 2.Bg3#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sxd3
- 2.Sc6#
- 1...Sxa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Kxd4
- Tries
- 1.Kxa5?
- 1...Sc6+
- 2.Sxc6#
- 1...Kxd4
- 2.Sc4#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Sc6#
- 1...Sxa6
- 2.Sc6#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Kd6!
- 1...Sc6+
- 1.Kb7?
- 1...Kxd4
- 2.Sc4#
- 1...Kd6
- 2.Rxd5#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Sc6#
- 1...Sxa6
- 2.Sc6#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...a4!
- 1...Kxd4
- 1.Sc2?
- threat
- 2.Bg3#
- 1...Sxc2
- 2.Sc6#
- 2.Qe7#
- 1...Sxd3
- 2.Sc6#
- 2.Qe7#
- 1...Kd6!
- threat
- 1.Sb5?
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Qd6#
- 2.Qe7#
- 1...Sxa6
- 2.Qd6#
- 2.Qe7#
- 1...Sc1
- 2.Sc4#
- 2.Bg3#
- 1...Sg1
- 2.Sc4#
- 2.Bg3#
- 1...Sc3
- 2.Sc4#
- 2.Bg3#
- 1...Sg3
- 2.Sc4#
- 2.Bxg3#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Qd6#
- 2.Qe7#
- 1...Sc2
- 2.Qd6#
- 2.Qe7#
- 1...Sc6
- 2.Qd6#
- 1...a4!
- 1...Sxd4
- 1.Sc6+?
- 1...Kd6
- 2.Rxd5#
- 1...Sxc6!
- 1...Kd6
- 1.Bb5?
- 1...Kxd4
- 2.Sc4#
- 1...Kd6
- 2.Sc4#
- 2.Rxd5#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Sc6#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...a4!
- 1...Kxd4
- 1.Bb7?
- 1...Kxd4
- 2.Sc4#
- 1...Kd6
- 2.Rxd5#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Sc6#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...a4!
- 1...Kxd4
- 1.Bc8?
- 1...Kxd4
- 2.Sc4#
- 1...Kd6
- 2.Sc4#
- 2.Rxd5#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Sc6#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...a4!
- 1...Kxd4
- 1.Rxe2?
- threat
- 2.Sc4#
- 1...Kxd4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qc3#
- 1...Kd6
- 2.Rxd5#
- 1...fxe2!
- threat
- 1.Qxb4?
- threat
- 2.Sc6#
- 2.Rxd5#
- 1...Sxd4
- 2.Bg3#
- 1...Sc3
- 2.Sc4#
- 2.Sc6#
- 2.Bg3#
- 1...Sf4
- 2.Sc4#
- 2.Sc6#
- 1...axb4!
- threat
- 1.Kxa5?
- Keys
- 1.Qa4!
- 1...Kxd4
- 2.Sc6#
- 1...Kd6
- 2.Sc4#
- 1...Sxd4
- 2.Bg3#
- 1...Sxd3
- 2.Rxd5#
- 1...Sxa6
- 2.Rxd5#
- 1...Sc1
- 2.Sc4#
- 1...Sg1
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg3
- 2.Sc4#
- 1...Sf4
- 2.Sc4#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Kxd4
- 1.Qa4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT::R1(G),XP(e)
- S(a);::R(A)+S(F),DCHECK
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD::S(N)
- S(c);N_GUARD,XP(E)::S(N)
- S(c);N_GUARD,XB(K)::S(N)
- S(c);N_GUARD::S(N),XS(c)
- Tries
- Try
- K(L);S_FLIGHT,XP(d)
- Vars
- S(c);CHECK,N_GUARD::S(N),XS(c)
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::S(N)
- S(c);N_GUARD,XB(K)::S(N)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::S(N)
- Refutation
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT
- Try
- K(L);P-FLIGHT
- Vars
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT::R1(G),XP(e)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::S(N)
- S(c);N_GUARD,XB(K)::S(N)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::S(N)
- S(c);N_GUARD::S(N),XS(c)
- Refutation
- P(d);
- Try
- S(F);P_PINS(a)
- Threat
- B(C)
- Refutation
- K(f);N_SPINS(a),P_SPINP(e),P_SPINS(c),S_FLIGHT
- Try
- S(N);
- Vars
- S(a);N_GUARD,XR(G)::B(C)
- S(a);::R(A)+S(F),DCHECK
- S(c);OGATE::QAB1(D)
- Refutation
- P(d);
- Try
- S(N);CHECK
- Vars
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT::R1(G),XP(e)
- Refutation
- S(c);XS(N)
- Try
- B(K);
- Vars
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::S(N)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::S(N)
- S(c);N_GUARD::S(N),XS(c)
- Refutation
- P(d);
- Try
- B(K);
- Vars
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT::R1(G),XP(e)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::S(N)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::S(N)
- S(c);N_GUARD::S(N),XS(c)
- Refutation
- P(d);
- Try
- B(K);
- Vars
- K(f);S_FLIGHT,XR(G)::B(C)+S(F)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::S(N)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::S(N)
- S(c);N_GUARD::S(N),XS(c)
- Refutation
- P(d);
- Try
- R(A);XS(a)
- Threat
- R(A)+S(F),DCHECK
- Vars
- K(f);P_SPINP(e),P_SPINS(c),S_FLIGHT::R1(G),XP(e)
- Refutation
- P(b);XR(A)
- Try
- Q(D);XS(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,XR(G)::B(C)
- Refutation
- P(d);XQ(D)
- Try
- Actual
- Q(D);
- Vars
- K(f);P_SPINS(c),S_FLIGHT,XR(G)::S(N)
- K(f);P_SPINP(e),S_FLIGHT::S(F)
- S(a);N_GUARD,SBLOCK,XR(G)::B(C)
- S(c);N_GUARD,XP(E)::R1(G),XP(e)
- S(c);N_GUARD,XB(K)::R1(G),XP(e)
- S(a);::R(A)+S(F),DCHECK
- S(c);N_GUARD::R1(G),XP(e)
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).