MESON Chess Problem Database

Problem Display
PID: 134745 (2q5/B7/1Np1pb1r/1p1R2P1/1Rp1k1NQ/6P1/2K1P3/8 w - - 0 1)

Trumper, William Barnard

The Field, 1966

(First published on Thu Jun 16 1966)

2q5/B7/1Np1pb1r/1p1R2P1/1Rp1k1NQ/6P1/2K1P3/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Qh1#
    • 1...Rh7
      • 2.Qxh7#
  • Tries
    • 1.Rxc4+?
      • 1...Bd4
        • 2.Rcxd4#
        • 2.Re5#
      • 1...bxc4!
    • 1.Re5+?
      • 1...Kd4
        • 2.e3#
      • 1...Bxe5!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Sge3#
      • 1...Bxg5
        • 2.Sce3#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Re5#
      • 1...cxd5
        • 2.Sxh6#
      • 1...exd5
        • 2.Sd6#
      • 1...Be5
        • 2.Rxe5#
      • 1...e5
        • 2.Sce3#
      • 1...Ba1
        • 2.Sf6#
      • 1...Bb2
        • 2.Sf6#
      • 1...Bc3
        • 2.Sf6#
      • 1...Bd4
        • 2.Sf6#
      • 1...Be7
        • 2.Sf6#
        • 2.Re5#
      • 1...Bg7
        • 2.Sf6#
      • 1...Bd8
        • 2.Sce3#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Re5#
      • 1...Bh8
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::QAB(F)
    • R(g);OGATE::QAB(F),XR(g)
  • Tries
    • Try
      • R(D);CHECK,XP(a)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(G);CHECK
      • Vars
        • K(b);P-FLIGHT::P(B)
      • Refutation
        • B(f);XR(G)
  • Actual
    • S(I);XP(a)
    • Threat
      • QAR(F)+S(E),DCHECK,XB(f)
    • Vars
      • K(b);S_FLIGHT,XR(G)::S(E)
      • P(d);P_PINS(I),SBLOCK,XR(G)::QAR(F)+S(E),XR(g)
      • P(e);SBLOCK,XR(G)::R(D)+S(I),DCHECK
      • B(f);N_GUARD::R1(G),XB(f)
      • P(e);S_CUTB(f)::R(D)+S(I)
      • B(f);::QAR(F)+S(E),DCHECK
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