MESON Chess Problem Database

Problem Display
PID: 2481 (7B/6R1/3p4/3p4/3k2p1/6K1/2R5/1B6 w - - 0 1)

Loyd, Sam

Source?, 0000

7B/6R1/3p4/3p4/3k2p1/6K1/2R5/1B6

#2

5 + 4

1679 American Chess Nuts 1868
5206 Sam Loyd and His Chess Problems 1913
15 British Chess Magazine 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Kf4?
      • 1...g3
        • 2.Rxg3#
      • 1...Kd3!
    • 1.Rc1?
      • threat
        • 2.Re7#
      • 1...Ke5
        • 2.Rg6#
        • 2.Re7#
      • 1...Ke3!
    • 1.Rc3?
      • threat
        • 2.Rxg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rgc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rh7#
        • 2.Rg8#
      • 1...Ke5
        • 2.Rg6#
        • 2.Re7#
      • 1...Kxc3!
    • 1.Rc6?
      • threat
        • 2.Re7#
      • 1...Ke5
        • 2.Rg6#
        • 2.Re7#
      • 1...Ke3!
    • 1.Rcc7?
      • threat
        • 2.Rge7#
      • 1...Ke5
        • 2.Rg6#
        • 2.Rge7#
      • 1...Ke3!
    • 1.Rc8?
      • threat
        • 2.Re7#
      • 1...Ke5
        • 2.Rg6#
        • 2.Re7#
      • 1...Ke3!
  • Keys
    • 1.Rb2!
      • 1...Kc3
        • 2.Rc7#
      • 1...Ke3
        • 2.Re7#
      • 1...Kc4
        • 2.Rc7#
      • 1...Kc5
        • 2.Rc7#
      • 1...Ke5
        • 2.Rg6#
        • 2.Re7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(b);OGATE::B(E)+R(D),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Threat
        • B(E)+R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(11)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • B(E)+R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • B(E)+R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • B(E)+R(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::B(E)+R(D),DCHECK
      • K(a);S_FLIGHT::R(D)
      • K(a);P-FLIGHT::R(D)
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