MESON Chess Problem Database

Problem Display
PID: 172315 (b1NK4/8/2kp4/Q7/1P6/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

b1NK4/8/2kp4/Q7/1P6/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb7
      • 2.Qb6#
      • 2.Qb5#
    • 1...Bb7
      • 2.Sa7#
      • 2.Se7#
    • 1...d5
      • 2.Qb6#
      • 2.Qa6#
  • Tries
    • 1.Ke7?
      • 1...Bb7
        • 2.Sa7#
      • 1...d5
        • 2.Qb6#
      • 1...Kb7!
    • 1.Ke8?
      • 1...Bb7
        • 2.Sa7#
        • 2.Se7#
      • 1...d5
        • 2.Qb6#
      • 1...Kb7!
    • 1.Qa4+?
      • 1...Kb7
        • 2.Qb5#
      • 1...Kd5!
    • 1.Qc5+?
      • 1...Kb7
        • 2.Qb6#
        • 2.Qb5#
      • 1...dxc5!
    • 1.Qg5?
      • 1...Kb7
        • 2.Qb5#
      • 1...Bb7
        • 2.b5#
      • 1...d5!
    • 1.Qh5?
      • 1...Kb7
        • 2.Qb5#
      • 1...Bb7
        • 2.b5#
      • 1...d5!
  • Keys
    • 1.Qf5!
      • 1...Kb7
        • 2.Qb5#
      • 1...d5
        • 2.Qd7#
      • 1...Bb7
        • 2.b5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • B(c);SBLOCK::S(C)
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • B(c);SBLOCK::P(A)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • B(c);SBLOCK::P(A)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • P(b);::QAB1(B)
      • B(c);SBLOCK::P(A)
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