MESON Chess Problem Database

Problem Display
PID: 234786 (kbK1R3/8/1P6/8/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2016

kbK1R3/8/1P6/8/8/8/8/8

#2

3 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.b7#
    • 1...Bc7
      • 2.Kxc7#
  • Tries
    • 1.Re2?
      • 1...Bh2
        • 2.Ra2#
      • 1...Bg3
        • 2.Ra2#
      • 1...Bf4
        • 2.Ra2#
      • 1...Be5
        • 2.Ra2#
      • 1...Ba7
        • 2.b7#
      • 1...Bc7
        • 2.Ra2#
      • 1...Bd6!
    • 1.Re3?
      • 1...Bh2
        • 2.Ra3#
      • 1...Bg3
        • 2.Ra3#
      • 1...Bf4
        • 2.Ra3#
      • 1...Be5
        • 2.Ra3#
      • 1...Ba7
        • 2.b7#
      • 1...Bc7
        • 2.Ra3#
      • 1...Bd6!
    • 1.Re5?
      • 1...Bd6
        • 2.Ra5#
      • 1...Ba7
        • 2.b7#
      • 1...Bc7
        • 2.Ra5#
      • 1...Bxe5!
    • 1.Re7?
      • 1...Bd6
        • 2.Ra7#
      • 1...Bh2
        • 2.Ra7#
      • 1...Bg3
        • 2.Ra7#
      • 1...Bf4
        • 2.Ra7#
      • 1...Be5
        • 2.Ra7#
      • 1...Ba7
        • 2.Rxa7#
        • 2.b7#
      • 1...Bc7!
  • Keys
    • 1.Re4!
      • 1...Bd6
        • 2.Ra4#
      • 1...Bh2
        • 2.Ra4#
      • 1...Bg3
        • 2.Ra4#
      • 1...Bf4
        • 2.Ra4#
      • 1...Be5
        • 2.Ra4#
      • 1...Ba7
        • 2.b7#
      • 1...Bc7
        • 2.Ra4#

Anticipated by 4753(1890), 225207(2000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::P(A)
    • B(b);::R(C)+K(B),XB(b)
  • Tries
    • Try
      • R(C);
      • Vars
        • B(b);N_GUARD::R(C)
        • B(b);SBLOCK::P(A)
      • Refutation
        • B(b);
    • Try
      • R(C);
      • Vars
        • B(b);N_GUARD::R(C)
        • B(b);SBLOCK::P(A)
      • Refutation
        • B(b);
    • Try
      • R(C);
      • Vars
        • B(b);N_GUARD::R(C)
        • B(b);SBLOCK::P(A)
      • Refutation
        • B(b);XR(C)
    • Try
      • R(C);
      • Vars
        • B(b);N_GUARD::R1(C)
      • Refutation
        • B(b);
  • Actual
    • R(C);
    • Vars
      • B(b);N_GUARD::R(C)
      • B(b);SBLOCK::P(A)
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