MESON Chess Problem Database

Problem Display
PID: 225560 (B2Q3q/rn3pNp/3B4/1P2R1bR/r2k4/pP2pPp1/4P3/4K3 w - - 0 1)

Kovacik, Jozef

Praca, 1955

B2Q3q/rn3pNp/3B4/1P2R1bR/r2k4/pP2pPp1/4P3/4K3

#2

11 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bxa3+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Qxd8
        • 2.Bb2#
      • 1...Bxd8
        • 2.Bb2#
      • 1...Sd6
        • 2.Bb2#
      • 1...Sxd8
        • 2.Bb2#
      • 1...Kxe5!
    • 1.Re4+?
      • 1...Kd5
        • 2.Bf8#
      • 1...Kc3!
    • 1.Qb6+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Kc3!
  • Keys
    • 1.Rxe3!
      • threat
        • 2.Rd3#
      • 1...Kxe3
        • 2.Sf5#
      • 1...Kd5
        • 2.Bf8#
      • 1...Bxe3
        • 2.Qf6#
      • 1...Sxd6
        • 2.Qb6#
      • 1...Sc5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);CHECK,XP(a)
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(K)
        • Q(k);XQ(K)::B(H)
        • B(f);XQ(K)::B(H)
        • S(h);P_SPINS(h)::B(H)
        • S(h);XQ(K)::B(H)
      • Refutation
        • K(e);P_SPINB(f),S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINB(f),P_SPINS(h)::QAR(K)+B(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB1(K),XS(h)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(F);XP(b)
    • Threat
      • R1(F)
    • Vars
      • K(e);S_FLIGHT,XR(F)::S(I)
      • K(e);P-FLIGHT,P_SPINB(f),P_SPINS(h)::QAR(K)+B(H)
      • B(f);N_GUARD,SBLOCK,XR(F)::QAB(K)
      • S(h);N_GUARD,P_SPINS(h),XB(H)::QAB(K)
      • S(h);::S(I)
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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).