MESON Chess Problem Database

Problem Display
PID: 107635 (2n5/R1Q5/n2PBN2/4kP1p/bP1Np1p1/8/1KP5/5R2 w - - 0 1)

Bakcsi, Gyorgy

Northwest Chess, 1975

2n5/R1Q5/n2PBN2/4kP1p/bP1Np1p1/8/1KP5/5R2

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qc3#
    • 1...Kxf6
      • 2.Qg7#
  • Tries
    • 1.Sc6+?
      • 1...Kxf6
        • 2.Qg7#
      • 1...Bxc6!
    • 1.Sxg4+?
      • 1...Kxd4
        • 2.Rd1#
        • 2.Qc3#
        • 2.Qc4#
        • 2.Qg7#
      • 1...hxg4!
    • 1.Sd7+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Bxd7!
    • 1.Qg7?
      • threat
        • 2.Se8#
      • 1...Kxd4
        • 2.Sxg4#
      • 1...Kxd6
        • 2.Sxe4#
      • 1...Be8
        • 2.Sxe8#
      • 1...e3!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sb5#
      • 1...Kxd6
        • 2.Qg3#
      • 1...Kxf6
        • 2.Sf3#
      • 1...Bb5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(K)
    • K(d);OGATEB,S_FLIGHT,XS(I)::QAB1(K)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(I)::QAB1(K)
      • Refutation
        • B(a);XS(E)
    • Try
      • S(I);CHECK,XP(c)
      • Refutation
        • P(e);XS(I)
    • Try
      • S(I);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAB1(K)
      • Refutation
        • B(a);XS(I)
    • Try
      • Q(K);
      • Threat
        • QAB(K)+S(I)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAB(K)+S(I),XP(c)
        • K(d);S_FLIGHT,XP(G)::S(I),XP(b)
        • B(a);::QAB(K)+S(I),XB(a)
      • Refutation
        • P(b);
  • Actual
    • Q(K);
    • Threat
      • QAB(K)+S(E)
    • Vars
      • K(d);S_FLIGHT,XP(G)::QAB(K)
      • K(d);S_FLIGHT,XS(I)::QAB(K)+S(E)
      • B(a);::QAB(K)+S(E),XB(a)
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