MESON Chess Problem Database

Problem Display
PID: 136403 (8/8/P2p1p2/1P2kPp1/6K1/1pPP4/QN6/B7 w - - 0 1)

Czene, Istvan

2nd HM., Magyar Sakkszovetseg, 1991

8/8/P2p1p2/1P2kPp1/6K1/1pPP4/QN6/B7

#2

9 + 5

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1?
      • 1...bxa2
        • 2.c4#
      • 1...b2
        • 2.Qe6#
      • 1...d5
        • 2.Qh2#
      • 1...Kd5!
    • 1.Qa3?
      • 1...d5
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qa4?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...Kd5
        • 2.Qd4#
      • 1...d5!
    • 1.Qa5?
      • 1...d5
        • 2.Qc7#
      • 1...Kd5!
  • Keys
    • 1.Sa4!
      • 1...Kd5
        • 2.c4#
      • 1...bxa2
        • 2.c4#
      • 1...b2
        • 2.Qe6#
      • 1...d5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • P(a);N_GUARD,XQ(B)::B(A)+P(D)
        • P(a);OGATE::QAR1(B)
        • P(d);SBLOCK::QAB(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • Q(B);
      • Vars
        • P(d);OGATE,SBLOCK::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::P(D)
      • P(a);N_GUARD,XQ(B)::B(A)+P(D)
      • P(a);OGATE::QAR1(B)
      • P(d);SBLOCK::QAB(B)
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