MESON Chess Problem Database

Problem Display
PID: 117354 (8/3B4/8/K2kN3/3B2P1/8/3R4/8 w - - 0 1)

Lyalyushkin, Yuri Konstantinovich

Lenninsky Pyt, 1987

8/3B4/8/K2kN3/3B2P1/8/3R4/8

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...Kxc4
        • 2.Be6#
      • 1...Ke4!
    • 1.Sc6?
      • 1...Kc4
        • 2.Be6#
      • 1...Kd6
        • 2.Bb6#
      • 1...Ke4!
    • 1.Sf7?
      • 1...Kc4
        • 2.Be6#
      • 1...Ke4!
    • 1.Bb2+?
      • 1...Kc5
        • 2.Ba3#
      • 1...Ke4!
    • 1.Bc3+?
      • 1...Kc5
        • 2.Bb4#
      • 1...Ke4!
  • Keys
    • 1.Sg6!
      • 1...Kc4
        • 2.Be6#
      • 1...Ke4
        • 2.Bc6#
      • 1...Kd6
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT,XS(E)::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);P-FLIGHT::R(A)+B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::B(F)
      • K(a);P-FLIGHT::R(A)+B(B)
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