MESON Chess Problem Database

Problem Display
PID: 100496 (8/8/B1p5/1p6/k7/1N6/K7/5Q2 w - - 0 1)

Czepiznego, W

Tura, Waldemar

Ring Tournament, 1988

8/8/B1p5/1p6/k7/1N6/K7/5Q2

#2

4 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qxb5#
  • Tries
    • 1.Bxb5+?
      • 1...Kb4
        • 2.Qc4#
      • 1...cxb5!
    • 1.Qd3?
      • 1...Kb4
        • 2.Qd4#
      • 1...c5
        • 2.Qxb5#
      • 1...b4!
    • 1.Qc4+?
      • 1...b4
        • 2.Qxc6#
      • 1...bxc4!
    • 1.Qa1?
      • 1...Kb4
        • 2.Qd4#
      • 1...b4
        • 2.Kb2#
      • 1...c5!
    • 1.Qc1?
      • threat
        • 2.Qa3#
      • 1...b4
        • 2.Qxc6#
      • 1...Kb4!
    • 1.Qe1?
      • threat
        • 2.Sc5#
        • 2.Qa5#
      • 1...c5
        • 2.Sxc5#
        • 2.Qa5#
      • 1...b4!
    • 1.Qf6?
      • 1...Kb4
        • 2.Qd4#
      • 1...b4
        • 2.Qxc6#
      • 1...c5!
  • Keys
    • 1.Kb2!
      • 1...Kb4
        • 2.Qf4#
      • 1...b4
        • 2.Qa1#
      • 1...c5
        • 2.Qxb5#

Anticipated by 15577(1986-1987)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(A),XP(b)
  • Tries
    • Try
      • B(D);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XB(D)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(c);N_GUARD::QAB1(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);OGATEB,P_SPINP(b),SBLOCK::QAB(A),XP(c)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(b);SBLOCK::QAR(A)+K(B)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(A),XP(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(b);OGATEB,SBLOCK::QAB(A),XP(c)
      • Refutation
        • P(c);
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR(A)
      • P(b);SBLOCK::QAR(A)
      • P(c);N_GUARD::QAB1(A),XP(b)
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