MESON Chess Problem Database

Problem Display
PID: 46625 (8/1B2p2R/6N1/4Pkb1/8/2N5/8/3K2R1 w - - 0 1)

Loyd, Sam

Lasker's Chess Magazine, 1904

8/1B2p2R/6N1/4Pkb1/8/2N5/8/3K2R1

#2

7 + 3

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Bc8#
    • 1...Kxg6
      • 2.Be4#
    • 1...e6
      • 2.Be4#
  • Tries
    • 1.Rxg5+?
      • 1...Ke6
        • 2.Sf8#
        • 2.Bc8#
        • 2.Rxe7#
      • 1...Kxg5!
    • 1.Rxe7?
      • threat
        • 2.Be4#
      • 1...Bxe7
        • 2.Bc8#
      • 1...Kxg6!
  • Keys
    • 1.Bg2!
      • 1...Kg4
        • 2.Be4#
      • 1...Ke6
        • 2.Bh3#
      • 1...Kxg6
        • 2.Be4#
      • 1...Bc1
        • 2.Bh3#
      • 1...Bd2
        • 2.Bh3#
      • 1...Be3
        • 2.Bh3#
      • 1...Bf4
        • 2.Bh3#
      • 1...Bh4
        • 2.Bh3#
      • 1...Bf6
        • 2.Bh3#
      • 1...Bh6
        • 2.Bh3#
      • 1...e6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(F)
    • K(a);P_SPINB(b),S_FLIGHT,XS(E)::B(F)
    • P(c);SBLOCK::B(F)
  • Tries
    • Try
      • R(B);CHECK,XB(b)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • R(G);XP(c)
      • Threat
        • B(F)
      • Vars
        • B(b);XR(G)::B(F)
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT,XS(E)
  • Actual
    • B(F);
    • Vars
      • K(a);S_FLIGHT::R(B)+B(F)
      • K(a);S_FLIGHT::B(F)
      • K(a);S_FLIGHT,XS(E)::B(F)
      • B(b);::B(F)
      • P(c);SBLOCK::B(F)
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