MESON Chess Problem Database

Problem Display
PID: 171383 (8/3p4/1Q1B4/p7/kb6/8/2K5/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Temp-64 (Nikolaev), 1995

8/3p4/1Q1B4/p7/kb6/8/2K5/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qxa5#
    • 1...Be1
      • 2.Qb3#
    • 1...Bd2
      • 2.Qb3#
    • 1...Ba3
      • 2.Qb3#
    • 1...Bc3
      • 2.Qb3#
    • 1...Bc5
      • 2.Qb3#
    • 1...Bxd6
      • 2.Qb3#
  • Tries
    • 1.Qd4?
      • 1...Ka3
        • 2.Qa1#
      • 1...Kb5!
    • 1.Qb5+?
      • 1...Ka3
        • 2.Qxa5#
      • 1...Kxb5!
    • 1.Qb7?
      • 1...Bxd6
        • 2.Qb3#
      • 1...Be1
        • 2.Qb3#
        • 2.Qxd7#
      • 1...Bd2
        • 2.Qb3#
        • 2.Qxd7#
      • 1...Ba3
        • 2.Qb3#
        • 2.Qxd7#
      • 1...Bc3
        • 2.Qb3#
        • 2.Qxd7#
      • 1...Bc5
        • 2.Qb3#
      • 1...Ka3!
    • 1.Qb8?
      • 1...Bxd6
        • 2.Qb3#
      • 1...Be1
        • 2.Qb3#
      • 1...Bd2
        • 2.Qb3#
      • 1...Ba3
        • 2.Qb3#
      • 1...Bc3
        • 2.Qb3#
      • 1...Bc5
        • 2.Qb3#
      • 1...Ka3!
  • Keys
    • 1.Bxb4!
      • threat
        • 2.Qxa5#
      • 1...axb4
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(a);P-FLIGHT,P_SPINB(b)::QAR2(B),XP(c)
    • B(b);OGATE::QAB1(B)
    • B(b);OGATE,XB(C)::QAB1(B)
  • Tries
    • Try
      • Q(B);P_PINB(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINB(b)::QAR2(B),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • B(b);OGATE,XB(C)::QAB1(B)
        • B(b);OGATE::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINB(b)
    • Try
      • Q(B);
      • Vars
        • B(b);OGATE,XB(C)::QAB1(B)
        • B(b);OGATE::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINB(b)
  • Actual
    • B(C);XB(b)
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • P(c);OGATEB,SBLOCK,XB(C)::QAR2(B)
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