MESON Chess Problem Database

Problem Display
PID: 173811 (7R/8/8/4R1N1/6kp/4K3/5P2/8 w - - 0 1)

Borovik, Boris V

Die Schwalbe, 1985

7R/8/8/4R1N1/6kp/4K3/5P2/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kd4?
      • 1...Kf4
        • 2.Rxh4#
      • 1...h3!
    • 1.Sf3?
      • threat
        • 2.Rxh4#
      • 1...h3
        • 2.Sh2#
        • 2.Rg5#
        • 2.Rh4#
        • 2.Rg8#
      • 1...Kh3!
    • 1.Se4?
      • 1...h3
        • 2.Sf6#
        • 2.Rg5#
        • 2.f3#
      • 1...Kh3!
    • 1.Se6?
      • 1...h3
        • 2.Rg5#
      • 1...Kh3!
    • 1.Sf7?
      • 1...h3
        • 2.Rg5#
      • 1...Kh3!
    • 1.Sh7?
      • 1...h3
        • 2.Sf6#
      • 1...Kh3!
  • Keys
    • 1.Rg8!
      • 1...Kh5
        • 2.Sf7#
      • 1...h3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(E),XP(b)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • R1(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • P(b);::R1(C)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • P(b);::R1(C)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(D);
      • Vars
        • P(b);::S(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::R(C)+S(D)
      • P(b);SBLOCK::R(E)+S(D)
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