MESON Chess Problem Database

Problem Display
PID: 19056 (7b/2pBB1nK/1nN4R/3kp3/1R2N1Qp/5r2/2b4q/8 w - - 0 1)

Westbury, Eric Ernest

1st Prize, Western Daily Mercury, 1911

7b/2pBB1nK/1nN4R/3kp3/1R2N1Qp/5r2/2b4q/8

#2

8 + 10

15 British Chess Magazine 1912
56 The Problemist 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sf6#
    • 1...Rf5
      • 2.Sc3#
    • 1...Bxe4+
      • 2.Qxe4#
    • 1...Sc4
      • 2.Rb5#
    • 1...Sxd7
      • 2.Qxd7#
    • 1...Sf5
      • 2.Qg8#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Be6+?
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Kxc6!
    • 1.Qf5?
      • threat
        • 2.Sf6#
        • 2.Rd4#
      • 1...Rxf5
        • 2.Sc3#
      • 1...Bxe4
        • 2.Rd4#
        • 2.Qxe4#
      • 1...Sxd7
        • 2.Rd4#
        • 2.Qxd7#
      • 1...Qg1
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Qd2
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Qf2
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Rd3
        • 2.Sf6#
      • 1...Sc4
        • 2.Sf6#
        • 2.Rb5#
      • 1...Sh5
        • 2.Rd4#
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Rd4#
        • 2.Qe6#
      • 1...Sxf5!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Rd4#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Sxh5
        • 2.Qe6#
      • 1...Qg1
        • 2.Rxe5#
      • 1...Qd2
        • 2.Rxe5#
      • 1...Qf2
        • 2.Rxe5#
      • 1...Rd3
        • 2.Sf6#
      • 1...Rf5
        • 2.Sc3#
      • 1...Sc4
        • 2.Rb5#
      • 1...Sf5
        • 2.Qg8#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);N_PINS(B)::S(B)
    • B(a);CHECK,OGATE,XS(B)::QAB1(C),XB(a)
    • S(g);SBLOCK::R(A)
    • S(g);OGATE,XB(F)::QAR2(C),XS(g)
    • S(i);N_PINS(B),OGATE::QAB(C)
    • S(i);N_GUARD::QAB1(C)
    • S(i);N_GUARD::QAB1(C),XS(i)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • S(i);OGATE,XB(F)::QAB1(C),XS(i)
      • Refutation
        • K(e);S_FLIGHT,XS(D)
    • Try
      • Q(C);N_SPINS(B),P_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);N_GUARD,N_SPINP(f),XQ(C)::S(B)
        • R(c);::S(B)
        • S(i);N_GUARD::QAB1(C),XS(i)
      • Refutation
        • S(i);N_SPINP(f),XQ(C)
  • Actual
    • R(E);P_PINP(f)
    • Threat
      • R1(A)
    • Vars
      • B(a);CHECK,OGATE,XS(B)::QAB1(C),XB(a)
      • S(g);OGATE,XB(F)::QAR2(C),XS(g)
      • S(i);N_GUARD,N_SPINP(f),XR(E)::QAB1(C)
      • Q(b);N_GUARD::R1(E),XP(f)
      • R(c);N_PINS(B)::S(B)
      • R(c);N_PINS(B),N_SPINP(f)::S(B)
      • S(g);SBLOCK::R(A)
      • S(i);N_PINS(B),N_SPINP(f),OGATE::QAB(C)
      • S(i);N_GUARD::QAB1(C),XS(i)
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