MESON Chess Problem Database

Problem Display
PID: 52263 (1nR1Br2/4k3/3p2pN/b2pB3/r4p2/7Q/8/4R1K1 w - - 0 1)

Alvey, George Clarence Vincent

Hampshire Post, 1913

(First published on Fri May 23 1913)

1nR1Br2/4k3/3p2pN/b2pB3/r4p2/7Q/8/4R1K1

#2

7 + 9

5293 A selection of chess problems by G. C. Alvey 2004
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Bc3#
    • 1...Rb4
      • 2.Bd4#
    • 1...Bb4
      • 2.Bc3#
    • 1...Bb6+
      • 2.Bd4#
    • 1...Bc7
      • 2.Bd4#
    • 1...Bd8
      • 2.Bd4#
    • 1...Sa6
      • 2.Qd7#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Bxd6+?
      • 1...Kxd6
        • 2.Re6#
        • 2.Qe6#
      • 1...Kf6!
    • 1.Rc7+?
      • 1...Kd8
        • 2.Qc8#
      • 1...Kxe8
        • 2.Qc8#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Bxc7!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxd6#
      • 1...Bb6+
        • 2.Bd4#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Rxa3
        • 2.Bc3#
      • 1...Rf6
        • 2.Bxd6#
      • 1...Bd8
        • 2.Bd4#
      • 1...Rb4
        • 2.Bd4#
      • 1...Bb4
        • 2.Bc3#
      • 1...Bc7
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::R(A)+B(D)
    • R(a);S_CUTB(c)::R(A)+B(D)
    • B(c);S_CUTR(a)::R(A)+B(D)
    • B(c);CHECK,N_GUARD::R(A)+B(D)
    • B(c);N_GUARD::R(A)+B(D)
    • S(h);N_GUARD::QAR1(C)
    • S(h);N_GUARD::QAR1(C),XS(h)
  • Tries
    • Try
      • B(D);CHECK,XP(e)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR1(C)
        • K(g);P-FLIGHT,XB(G)::QAR2(C)
        • S(h);N_GUARD,P_SPINS(h)::QAR1(C),XS(h)
      • Refutation
        • B(c);XR(F)
  • Actual
    • Q(C);P_PINP(e)
    • Threat
      • QAB1(C),XP(e)
    • Vars
      • B(c);CHECK,N_GUARD::R(A)+B(D)
      • K(g);N_SPINP(e),P-FLIGHT::QAR1(C),XP(e)
      • R(a);N_GUARD,N_SPINP(e),XQ(C)::R(A)+B(D)
      • R(i);SBLOCK::R(A)+B(D),DCHECK,XP(e)
      • B(c);N_GUARD::R(A)+B(D)
      • R(a);N_SPINP(e),S_CUTB(c)::R(A)+B(D)
      • B(c);N_SPINP(e),S_CUTR(a)::R(A)+B(D)
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