MESON Chess Problem Database

Problem Display
PID: 103325 (1Q6/6p1/6K1/8/2pp4/2k5/1R6/8 w - - 0 1)

Mateuch, M

Kudesnik, 1992

1Q6/6p1/6K1/8/2pp4/2k5/1R6/8

#2

3 + 4

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qe5#
  • Tries
    • 1.Kxg7?
      • 1...d3
        • 2.Qe5#
      • 1...Kd3!
    • 1.Ra2?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Re2?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Rf2?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Rg2?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Rh2?
      • 1...d3
        • 2.Qb2#
      • 1...Kd3!
    • 1.Qh2?
      • threat
        • 2.Qc2#
        • 2.Qd2#
      • 1...d3
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qg3+?
      • 1...d3
        • 2.Qe5#
      • 1...Kxb2!
    • 1.Qf4?
      • threat
        • 2.Qd2#
      • 1...Kd3
        • 2.Qf3#
      • 1...d3
        • 2.Qe5#
      • 1...Kxb2!
    • 1.Qb5?
      • 1...d3
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qf8?
      • threat
        • 2.Qa3#
      • 1...Kd3
        • 2.Qf3#
      • 1...d3
        • 2.Qxg7#
      • 1...Kxb2!
  • Keys
    • 1.Qb7!
      • 1...Kd3
        • 2.Qf3#
      • 1...d3
        • 2.Qxg7#

Anticipated by 15833(1988)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(d)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(c);OGATEB,SBLOCK::QAB(C),XP(d)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(c);OGATEB,SBLOCK::QAB(C),XP(d)
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