MESON Chess Problem Database

Problem Display
PID: 9548 (3B2n1/2Q1rp2/1PR1pk1p/3P1N1K/8/8/1p6/1B6 w - - 0 1)

Marble, Murray

Lasker's Chess Magazine, 1905

3B2n1/2Q1rp2/1PR1pk1p/3P1N1K/8/8/1p6/1B6

#2

8 + 7

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3?
      • 1...exd5
        • 2.Rc6#
        • 2.Qd6#
      • 1...e5
        • 2.Rc6#
        • 2.Qd6#
        • 2.Qc6#
      • 1...exf5!
    • 1.Rc4?
      • 1...exd5
        • 2.Rc6#
        • 2.Qd6#
      • 1...e5
        • 2.Rc6#
        • 2.Qd6#
        • 2.Qc6#
      • 1...exf5!
    • 1.Rc5?
      • 1...exd5
        • 2.Rc6#
        • 2.Qd6#
      • 1...e5
        • 2.Rc6#
        • 2.Qd6#
        • 2.Qc6#
      • 1...exf5!
    • 1.Qxe7+?
      • 1...Ke5
        • 2.Qd6#
      • 1...Sxe7!
  • Keys
    • 1.Rc2!
      • 1...Kxf5
        • 2.Rf2#
      • 1...exd5
        • 2.Rc6#
      • 1...exf5
        • 2.Qc3#
      • 1...e5
        • 2.Rc6#

This is a version of 9547

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);N_PINP(b)
      • Refutation
        • P(b);XS(C)
    • Try
      • R(F);N_PINP(b)
      • Refutation
        • P(b);XS(C)
    • Try
      • R(F);N_PINP(b)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(G);CHECK,XR(e)
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • S(g);P_SPINS(g),XQ(G)
  • Actual
    • R(F);N_PINP(b)
    • Vars
      • K(c);N_SPINR(e),OGATEB,P-FLIGHT,XS(C)::B(A)+R(F),DCHECK
      • P(b);OGATEB,XP(B)::R(F)
      • P(b);N_GUARD,SBLOCK,XS(C)::QAB(G)
      • P(b);OGATEB::R(F)
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