MESON Chess Problem Database

Problem Display
PID: 171333 (4R3/2P4Q/1k6/2N5/B7/4K3/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Vestnik Problemista, 1994

4R3/2P4Q/1k6/2N5/B7/4K3/8/8

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rb8+?
      • 1...Ka5
        • 2.Rb5#
      • 1...Ka7
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxc5!
    • 1.Qb1+?
      • 1...Ka5
        • 2.Ra8#
        • 2.Qb5#
      • 1...Ka7
        • 2.Qb7#
        • 2.Qb8#
      • 1...Kxc7
        • 2.Qb8#
      • 1...Kxc5!
    • 1.Qe4?
      • 1...Kxc5
        • 2.Qd4#
      • 1...Ka7
        • 2.Qb7#
      • 1...Kxc7
        • 2.Qc6#
      • 1...Ka5!
    • 1.Qd7?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5
        • 2.Qd4#
      • 1...Ka7!
  • Keys
    • 1.Qd3!
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxc5
        • 2.Qd4#
      • 1...Ka7
        • 2.Qa6#
      • 1...Kxc7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(F)
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XP(D)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);S_FLIGHT,XP(D)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(E)
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