MESON Chess Problem Database

Problem Display
PID: 94595 (1B3Q2/1pr1r2B/1R4n1/2Pp4/RNPkP3/1P4P1/3P4/2K1N3 w - - 0 1)

Kroc, Henryk

Magasinet, 1955

1B3Q2/1pr1r2B/1R4n1/2Pp4/RNPkP3/1P4P1/3P4/2K1N3

#2

14 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qf4#
    • 1...Rxe4
      • 2.Sf3#
    • 1...Se5
      • 2.Qf2#
  • Tries
    • 1.Sec2+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxc5!
    • 1.Sf3+?
      • 1...Kxe4
        • 2.Bxg6#
        • 2.Qf4#
      • 1...Kxc5!
    • 1.Sbc2+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxc5!
    • 1.Qf2+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...Ke5!
    • 1.Qf6+?
      • 1...Kxe4
        • 2.Bxg6#
        • 2.Qf4#
      • 1...Kxc5
        • 2.Sed3#
        • 2.Sbd3#
        • 2.Ra5#
        • 2.Rb5#
        • 2.d4#
      • 1...Se5
        • 2.Qf2#
      • 1...Re5!
  • Keys
    • 1.cxd5!
      • threat
        • 2.Sbd3#
      • 1...Rxc5+
        • 2.Sbc2#
      • 1...Kxe4
        • 2.Qf4#
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Sbd3#
      • 1...Rxe4
        • 2.Sf3#
      • 1...Se5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(I)::QAR1(N)
    • R(f);SBLOCK,XP(I)::S(B)
    • S(c);SBLOCK::QAB(N)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c),XP(I)::QAR1(N)
        • K(a);P_SPINR(e),S_FLIGHT::QAR1(N)
      • Refutation
        • K(a);P_SPINR(f),S_FLIGHT,XP(J)
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P_SPINR(f),S_FLIGHT,XP(J)
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c),XP(I)::QAR1(N)
        • K(a);P_SPINR(e),S_FLIGHT::QAR1(N)
      • Refutation
        • K(a);P_SPINR(f),S_FLIGHT,XP(J)
    • Try
      • Q(N);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(I)::QAR1(N)
      • Refutation
        • K(a);P_SPINR(e),S_FLIGHT
    • Try
      • Q(N);CHECK
      • Vars
        • S(c);P_SPINS(c),SBLOCK::QAB(N)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • P(H);P_SPINP(J),XP(b)
    • Threat
      • R(F)+S(G)
    • Vars
      • R(e);CHECK,SBLOCK,XP(J)::R(F)+S(G),DCHECK
      • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(I)::QAR1(N)
      • K(a);P_SPINR(f),S_FLIGHT,XP(J)::QAB(N)
      • K(a);P_SPINR(e),S_FLIGHT::S(G)
      • R(f);SBLOCK,XP(I)::S(B)
      • S(c);SBLOCK::QAB(N)
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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).