MESON Chess Problem Database

Problem Display
PID: 6401 (2K2nbq/b1p2pQ1/4k3/1prN3R/1PRr2p1/3pNPB1/B7/8 w - - 0 1)

Westbury, Eric Ernest

2nd Prize, Evening Standard, 1929

2K2nbq/b1p2pQ1/4k3/1prN3R/1PRr2p1/3pNPB1/B7/8

#2

10 + 12

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh5
      • 2.Qf6#
    • 1...Qh6
      • 2.Qe5#
    • 1...Qh7
      • 2.Qe5#
      • 2.Qf6#
    • 1...Re4
      • 2.Rxe4#
    • 1...Rdxd5
      • 2.Re4#
    • 1...Rc6
      • 2.Rxc6#
    • 1...f5
      • 2.Qe7#
    • 1...f6
      • 2.Qe7#
  • Tries
    • 1.Rh6+?
      • 1...Qxh6
        • 2.Qe5#
      • 1...f6
        • 2.Rxf6#
        • 2.Qe7#
      • 1...Sg6!
    • 1.Qxg4+?
      • 1...f5
        • 2.Qxf5#
      • 1...Rxg4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxd4#
      • 1...Kxd5
        • 2.Rxc5#
      • 1...Qxg7
        • 2.Sxg7#
      • 1...Qxh5
        • 2.Qe5#
      • 1...Rdxc4
        • 2.Sf4#
      • 1...Rdxd5
        • 2.Re4#
      • 1...Rcxc4
        • 2.Sxc7#
      • 1...Rcxd5
        • 2.Rc6#
      • 1...Re4
        • 2.Rxe4#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Rc6
        • 2.Rxc6#

There are these afters: 247681

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(l);N_GUARD,XR(H)::QAR1(I)
    • Q(l);N_GUARD::QAR1(I)
    • R(b);OGATE::R(F),XR(b)
    • R(b);OGATE,XS(G)::R(F)
    • R(e);OGATE::R(F),XR(e)
    • P(i);OGATE::QAR1(I)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • Q(l);XR(H)::QAR1(I)
      • Refutation
        • S(j);P_SPINS(j)
    • Try
      • Q(I);CHECK,XP(c)
      • Vars
        • P(i);P_SPINP(i)::QAB1(I),XP(i)
      • Refutation
        • R(b);XQ(I)
  • Actual
    • S(B);
    • Threat
      • S(B),XR(b)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(G)::B(A)+R(F),DCHECK,XR(e)
      • Q(l);XQ(I)::S(B),XQ(l)
      • Q(l);N_GUARD,XR(H)::QAR1(I)
      • R(b);N_GUARD,XR(F)::S(G)
      • R(b);OGATE,XS(G)::R(F)
      • R(e);N_GUARD,XR(F)::S(G),XP(h)
      • R(e);OGATE,XS(G)::R(F)
      • R(b);OGATE::R(F),XR(b)
      • R(b);N_GUARD::S(G),XR(b)
      • R(e);OGATE::R(F),XR(e)
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