MESON Chess Problem Database

Problem Display
PID: 99159 (5N2/1p5K/2k5/1p3R2/2N1p3/6B1/3P2R1/1bQ1rn1B w - - 0 1)

Grzankowski, Waclaw

Magyar Sakkvilag, 1938

5N2/1p5K/2k5/1p3R2/2N1p3/6B1/3P2R1/1bQ1rn1B

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Sa5#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Rg6#
      • 1...b6
        • 2.Sa5#
      • 1...Sg3!
    • 1.Bb8?
      • threat
        • 2.Rg6#
      • 1...b6
        • 2.Sa5#
      • 1...Sg3!
    • 1.Qa3?
      • threat
        • 2.Rc5#
        • 2.Qc5#
        • 2.Qd6#
      • 1...bxc4
        • 2.Qc5#
        • 2.Qd6#
      • 1...b6
        • 2.Qa8#
      • 1...e3
        • 2.Qc5#
        • 2.Qd6#
      • 1...b4!
    • 1.Qc3?
      • threat
        • 2.Qf6#
      • 1...b6
        • 2.Sa5#
        • 2.Sd6#
      • 1...Sxg3!
  • Keys
    • 1.d4!
      • threat
        • 2.Rc5#
        • 2.Qh6#
      • 1...Rxc1
        • 2.Rc5#
      • 1...Sxg3
        • 2.Rc5#
      • 1...bxc4
        • 2.Qh6#
      • 1...exd4 ep
        • 2.Re2#
      • 1...b6
        • 2.Sa5#
      • 1...Re3
        • 2.Rc5#
      • 1...Sd2
        • 2.Rc5#
      • 1...Se3
        • 2.Rc5#
      • 1...e3
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::QAR(A)+S(F),DCHECK
  • Tries
    • Try
      • B(E);
      • Threat
        • R(D)
      • Vars
        • P(g);SBLOCK::QAR(A)+S(F),DCHECK
      • Refutation
        • S(c);
    • Try
      • B(E);
      • Threat
        • R(D)
      • Vars
        • P(g);SBLOCK::QAR(A)+S(F),DCHECK
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(g);OGATEB::QAB(A)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Refutation
        • S(c);XB(E)
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XQ(A)::R1(G)
      • S(c);XB(E)::R1(G)
      • P(e);P_SPINP(e),XS(F)::QAR(A)
      • P(d);EP,OGATEB,XP(C)::B(B)+R(D)
      • P(g);SBLOCK::QAR(A)+S(F),DCHECK
      • R(b);::R1(G)
      • S(c);::R1(G)
      • P(d);OGATEB,P_PINR(G)::B(B)+R(D)
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