MESON Chess Problem Database

Problem Display
PID: 51132 (8/8/2p3R1/2B1k3/6B1/3P4/1p1P4/bK6 w - - 0 1)

Allison, Christopher John

Manchester Guardian, 1950

8/8/2p3R1/2B1k3/6B1/3P4/1p1P4/bK6

#2

6 + 4

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bd6#
    • 1...Kd5
      • 2.Rg5#
  • Tries
    • 1.Bh3?
      • 1...Kd5
        • 2.Rg5#
      • 1...Kf4!
    • 1.Bd7?
      • 1...Kd5
        • 2.Rg5#
      • 1...Kf4!
    • 1.Bc8?
      • 1...Kd5
        • 2.Rg5#
      • 1...Kf4!
    • 1.Rh6?
      • 1...Kd5
        • 2.Rh5#
      • 1...Kf4!
    • 1.Rg8?
      • 1...Kf4
        • 2.Bd6#
      • 1...Kd5
        • 2.Rg5#
      • 1...Kf6!
  • Keys
    • 1.Rg7!
      • 1...Kf4
        • 2.Bd6#
      • 1...Kd5
        • 2.Rg5#
      • 1...Kf6
        • 2.Bd4#

Anticipated by 1953(1859), 4775(1891), 234958(1894), 120937(1898), 57017(1900), 31183(1902), 175166(1902), 181896(1905), 50715(1907), 184830(1908), 189845(1912), 178324(1915), 193481(1915), 75889(1920), 206553(1925), 206593(1925), 231389(1927), 76533(1933), 76553(1936), 101951(1939), 19270(1943), 76843(1947), 184308(1950)

This anticipates 51583(1965), 213018(1967), 121122(1980), 240454(1992)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(E)
    • K(c);P-FLIGHT::R(F)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(E)
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(F);
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);P-FLIGHT::R(F)
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