MESON Chess Problem Database

Problem Display
PID: 209065 (8/8/2K5/8/kBp5/1bP5/PP6/7Q w - - 0 1)

Caplin, Aleksandr Borisovich

Sachova skladba, 2015

8/8/2K5/8/kBp5/1bP5/PP6/7Q

#2

6 + 3

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd1#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qc6#
      • 1...Kb5
        • 2.Qc6#
      • 1...Bxa2!
    • 1.Kb7?
      • threat
        • 2.Qc6#
      • 1...Kb5
        • 2.Qc6#
      • 1...Bxa2!
    • 1.Kc7?
      • threat
        • 2.Qc6#
      • 1...Kb5
        • 2.Qc6#
      • 1...Bxa2!
    • 1.Kd7?
      • threat
        • 2.Qc6#
      • 1...Kb5
        • 2.Qc6#
      • 1...Bxa2!
    • 1.Qa1?
      • 1...Bxa2
        • 2.Qxa2#
      • 1...Bd1
        • 2.Qxd1#
      • 1...Bc2!
    • 1.Qc1?
      • 1...Bd1
        • 2.Qxd1#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Bxa2!
    • 1.Qd1?
      • 1...Bc2
        • 2.Qxc2#
      • 1...Bxd1!
    • 1.axb3+?
      • 1...cxb3
        • 2.Qa1#
      • 1...Kxb3!
  • Keys
    • 1.Qb1!
      • 1...Bxa2
        • 2.Qxa2#
      • 1...Bd1
        • 2.Qxd1#
      • 1...Bc2
        • 2.Qxc2#

Anticipated by 134438(1968)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATEB::QAB(A),XB(a)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XP(B)
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XP(B)
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XP(B)
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);XP(B)
    • Try
      • Q(A);
      • Vars
        • B(a);OGATE,P_SPINB(a),XP(B)::QAR2(A),XB(a)
        • B(a);OGATEB::QAB(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Vars
        • B(a);OGATEB::QAB(A),XB(a)
      • Refutation
        • B(a);XP(B)
    • Try
      • Q(A);P_PINB(a)
      • Vars
        • B(a);OGATEB::QAB(A),XB(a)
      • Refutation
        • B(a);N_SPINB(a),XQ(A)
    • Try
      • P(B);CHECK,XB(a)
      • Vars
        • P(c);SBLOCK,XP(B)::QAR(A)
      • Refutation
        • K(b);S_FLIGHT,XP(B)
  • Actual
    • Q(A);
    • Vars
      • B(a);OGATE,XP(B)::QAR2(A),XB(a)
      • B(a);OGATEB::QAB(A),XB(a)
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