MESON Chess Problem Database

Problem Display
PID: 47364 (8/7B/6R1/8/4R3/6p1/1p6/1k2K3 w - - 0 1)

Lebedev, Leonid Arsentevich

Babruiskae zhytisse, 1998

8/7B/6R1/8/4R3/6p1/1p6/1k2K3

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
136 Problem Observer 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Re3?
      • 1...Ka1
        • 2.Ra6#
      • 1...Kc1
        • 2.Rc6#
      • 1...Ka2
        • 2.Ra6#
      • 1...Kc2
        • 2.Rc6#
      • 1...g2!
    • 1.Ra4?
      • threat
        • 2.Rc6#
      • 1...Kc1
        • 2.Rc6#
      • 1...Kc2!
    • 1.Rb4?
      • 1...Ka1
        • 2.Ra6#
      • 1...Kc1
        • 2.Rc6#
      • 1...Ka2
        • 2.Ra6#
      • 1...Kc2
        • 2.Rc6#
      • 1...g2!
    • 1.Rc4?
      • threat
        • 2.Ra6#
      • 1...Ka1
        • 2.Ra6#
      • 1...Ka2!
    • 1.Ra6?
      • threat
        • 2.Rc4#
      • 1...Kc1
        • 2.Rc4#
      • 1...Kc2!
    • 1.Rb6?
      • 1...Ka1
        • 2.Ra4#
      • 1...Kc1
        • 2.Rc4#
      • 1...Ka2
        • 2.Ra4#
      • 1...Kc2
        • 2.Rc4#
      • 1...g2!
    • 1.Rc6?
      • threat
        • 2.Ra4#
      • 1...Ka1
        • 2.Ra4#
      • 1...Ka2!
  • Keys
    • 1.Rxg3!
      • 1...Ka1
        • 2.Ra4#
      • 1...Kc1
        • 2.Rc4#
      • 1...Ka2
        • 2.Ra4#
      • 1...Kc2
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(C)
        • K(a);S_FLIGHT::R(C)
        • K(a);S_FLIGHT::B(D)+R(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Threat
        • B(D)+R(C)
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::R(C)
        • K(a);N_SPINP(b),S_FLIGHT::R(C)
        • K(a);N_SPINP(b),S_FLIGHT::B(D)+R(C),DCHECK
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Threat
        • B(D)+R(C)
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • B(D)+R(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::R(B)
        • K(a);N_SPINP(b),S_FLIGHT::R(B)
        • K(a);N_SPINP(b),S_FLIGHT::B(D)+R(B),DCHECK
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Threat
        • B(D)+R(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);XP(c)
    • Vars
      • K(a);P-FLIGHT::R(B)
      • K(a);S_FLIGHT::R(B)
      • K(a);S_FLIGHT::B(D)+R(B),DCHECK
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