MESON Chess Problem Database

Problem Display
PID: 16447 (1Q5b/1PKpRb2/p1P1N3/1RnPk1P1/6P1/1rrpP3/1B1N4/7q w - - 0 1)

Buglos, Janos

4th Comm., Raketa, 1940/II

1Q5b/1PKpRb2/p1P1N3/1RnPk1P1/6P1/1rrpP3/1B1N4/7q

#2

13 + 10

3713 Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Sf4#
    • 1...Qxd5
      • 2.Qxh8#
    • 1...Sa4
      • 2.Kxd7#
    • 1...Se4
      • 2.Sc4#
    • 1...Sxe6+
      • 2.Kxd7#
    • 1...dxc6
      • 2.Kxc6#
  • Tries
    • 1.Kb6+?
      • 1...Kxd5
        • 2.Sf4#
      • 1...d6!
    • 1.Sf4+?
      • 1...Se6+
        • 2.Kxd7#
      • 1...Be6!
    • 1.Sxc5+?
      • 1...Be6
        • 2.Sxd3#
        • 2.Sxd7#
      • 1...Kxd5!
    • 1.Bxc3+?
      • 1...Kxd5
        • 2.Sf4#
        • 2.Rxc5#
      • 1...Rxc3!
    • 1.Qxh8+?
      • 1...Kxd5
        • 2.Sf4#
        • 2.Qd4#
      • 1...Qxh8!
  • Keys
    • 1.cxd7!
      • threat
        • 2.Kc6#
      • 1...Sa4+
        • 2.Kd8#
      • 1...Se4+
        • 2.Sc4#
      • 1...Sxe6+
        • 2.Kb6#
      • 1...Sxb7+
        • 2.Kxb7#
      • 1...Sxd7+
        • 2.Kxd7#
      • 1...Kxd5
        • 2.Sf4#
      • 1...Qxd5
        • 2.Qxh8#

This anticipates 136226(1962-1963)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINR(c),P-FLIGHT,P_SPINS(e),XP(F)::S(I)
    • Q(a);N_GUARD,SBLOCK,XP(F)::QAB(M),XB(j)
    • S(e);P_PINP(H)::QAB(M)+K(K),XP(h)
    • S(e);P_PINP(H),SBLOCK::S(B)
    • S(e);CHECK,P_PINP(H),P_SPINS(e),XS(I)::QAB(M)+K(K),XP(h)
    • P(h);XP(H)::QAB(M)+K(K),XP(h)
  • Tries
    • Try
      • K(K);CHECK,P_SPINR(E),S_FLIGHT
      • Vars
        • K(f);N_SPINR(c),P-FLIGHT,P_SPINS(e),XP(F)::S(I)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • S(I);CHECK
      • Vars
        • S(e);CHECK,P_PINP(H),P_SPINS(e)::QAB(M)+K(K),XP(h)
      • Refutation
        • B(i);P_SPINB(i)
    • Try
      • S(I);CHECK,XS(e)
      • Refutation
        • K(f);N_SPINR(c),P-FLIGHT,XP(F)
    • Try
      • B(A);CHECK,XR(c)
      • Refutation
        • R(b);XB(A)
    • Try
      • Q(M);CHECK,XB(j)
      • Refutation
        • Q(a);XQ(M)
  • Actual
    • P(H);XP(h)
    • Threat
      • QAB(M)+K(K)
    • Vars
      • S(e);CHECK::QAB(M)+K(K)
      • S(e);CHECK,SBLOCK::S(B)
      • S(e);CHECK,P_SPINS(e),XS(I)::QAB(M)+K(K)
      • S(e);CHECK,XP(J)::QAB(M)+K(K),XS(e)
      • S(e);CHECK,XP(H)::QAB(M)+K(K),XS(e)
      • K(f);N_SPINR(c),P-FLIGHT,P_SPINS(e),XP(F)::S(I)
      • Q(a);N_GUARD,SBLOCK,XP(F)::QAB(M),XB(j)
HTML5 logo

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).