MESON Chess Problem Database

Problem Display
PID: 124491 (3Q4/8/8/8/1kP2B2/8/B7/K7 w - - 0 1)

Leschemelle, Matthieu

Phenix, 1998

3Q4/8/8/8/1kP2B2/8/B7/K7

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa5#
    • 1...Kc3
      • 2.Qd2#
    • 1...Kc5
      • 2.Qd6#
  • Tries
    • 1.Kb1?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kc3
        • 2.Bd2#
        • 2.Qd2#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka4!
    • 1.Kb2?
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka4!
    • 1.Bd2+?
      • 1...Ka3
        • 2.Qa5#
        • 2.Qa8#
      • 1...Ka4
        • 2.Qa5#
        • 2.Qa8#
      • 1...Kc5!
    • 1.Be3?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kc3
        • 2.Qd2#
      • 1...Ka4!
    • 1.Be5?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka4!
    • 1.Bd6+?
      • 1...Ka4
        • 2.Qa8#
      • 1...Kc3!
    • 1.Qd1?
      • 1...Ka3
        • 2.Bd6#
        • 2.Qb3#
      • 1...Kc3
        • 2.Qd2#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka5!
    • 1.Qd2+?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka4!
    • 1.Qd5?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kc3
        • 2.Qd2#
      • 1...Ka4!
  • Keys
    • 1.Qd7!
      • 1...Ka3
        • 2.Bd6#
      • 1...Kc3
        • 2.Qd2#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qd6#

Anticipated by 5102(1899)

This anticipates 168594(2005), 153215(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(E)
    • K(a);S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
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