MESON Chess Problem Database

Problem Display
PID: 22009 (br1n4/BkP2n2/2R5/3R4/8/K2B4/8/8 w - - 0 1)

Bettmann, Henry Wald

Good Companions (January), 1923

br1n4/BkP2n2/2R5/3R4/8/K2B4/8/8

#2

6 + 5

3360 Simple Two-move Themes 1924
20 De Problemist 1930
887 Mate in Two Moves 1931
5064 100 Years of the American Two-move Chess Problem 1962
5063 Spectacular Chess Problems 1965
3098 FIDE Album (1914-1944) (I) 1971
5065 Chess Problem Gems by Eight Eminent American Composers 1972
3310 2345 Chess Problems 1997
5503 ISC 2009
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.cxb8Q#
      • 2.cxb8R#
  • Tries
    • 1.Rb6+?
      • 1...Kxa7
        • 2.cxb8Q#
      • 1...Kc8
        • 2.cxb8Q#
      • 1...Kxc7!
    • 1.c8Q+?
      • 1...Kxa7
        • 2.Ra5#
        • 2.Ra6#
        • 2.Qa6#
      • 1...Rxc8!
  • Keys
    • 1.Rd7!
      • threat
        • 2.cxb8S#
        • 2.cxd8S#
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxc6
        • 2.cxb8S#
      • 1...Kxa7
        • 2.c8S#
      • 1...Kc8
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Sxc6
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Rc8
        • 2.cxd8S#
      • 1...Se5
        • 2.cxd8S#
        • 2.c8Q#
      • 1...Sg5
        • 2.cxb8S#
        • 2.cxd8S#
        • 2.c8Q#
        • 2.c8R#
      • 1...Sd6
        • 2.cxb8S#
        • 2.cxd8S#
        • 2.c8Q#
        • 2.c8R#
      • 1...Sh6
        • 2.cxb8S#
        • 2.cxd8S#
        • 2.c8Q#
        • 2.c8R#
      • 1...Sh8
        • 2.cxb8S#
        • 2.cxd8S#
        • 2.c8Q#
        • 2.c8R#
      • 1...Se6
        • 2.c8Q#

This anticipates 51544(1963), 3195(1972)

There are these versions: 26657

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::PXR(d)=Q
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(E)::PXR(d)=Q
        • K(a);S_FLIGHT::PXR(d)=Q
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • P(F);CHECK
      • Refutation
        • R(d);XQ(F)
  • Actual
    • R(C);
    • Threat
      • DUALS(4)
    • Vars
      • K(a);S_FLIGHT,XR(D)::PXR(d)=S
      • K(a);P-FLIGHT,XB(E)::P=S
      • K(a);S_FLIGHT::PXS(e)=Q
      • S(e);SBLOCK,XR(D)::PXR(d)=Q
      • R(d);::PXS(e)=S
      • S(e);::P=Q
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