MESON Chess Problem Database

Problem Display
PID: 262449 (8/8/KQ4P1/p2P4/4kB1r/4N3/ppP1pR2/1BRr4 w - - 0 1)

Bakcsi, Gyorgy

2nd HM., Europe Echecs, 1988

8/8/KQ4P1/p2P4/4kB1r/4N3/ppP1pR2/1BRr4

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.cxd3#
    • 1...Rd4
      • 2.Qe6#
  • Tries
    • 1.Qb4+?
      • 1...Rd4
        • 2.Qe7#
      • 1...axb4!
    • 1.Qd6?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.c3#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Rxf4
        • 2.Qxf4#
      • 1...Rh5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.c4#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Rxd5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATE::P(C),XR(a)
    • R(a);SBLOCK::QAR2(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • R(a);P_SPINR(a),SBLOCK::QAR(I)
      • Refutation
        • P(g);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(e);P-FLIGHT,S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTR(a)::P(C)
        • R(a);OGATE,XP(G)::QAB1(I),XR(a)
        • R(f);OGATE,XB(F)::QAR1(I),XR(f)
      • Refutation
        • R(f);
  • Actual
    • S(E);
    • Threat
      • QAR2(I)
    • Vars
      • K(e);S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTR(a),S_FLIGHT,XP(G)::P(C)
      • K(e);S_FLIGHT,XS(E)::QAB1(I)
      • R(a);SBLOCK,XP(G)::S(E)
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