MESON Chess Problem Database

Problem Display
PID: 133875 (4K3/4p3/2n1B1n1/3NbN2/3PkP2/2pp4/4p1P1/1QR5 w - - 0 1)

Wright Wood, S (= Wood, SW)

The Field, 1962

(First published on Thu Jun 21 1962)

4K3/4p3/2n1B1n1/3NbN2/3PkP2/2pp4/4p1P1/1QR5

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Sg3#
    • 1...Bxf4
      • 2.Sxc3#
    • 1...Sxd4
      • 2.Sg3#
    • 1...Sxf4
      • 2.Sxc3#
    • 1...e1Q
      • 2.Rxe1#
    • 1...e1S
      • 2.Rxe1#
    • 1...e1B
      • 2.Rxe1#
    • 1...e1R
      • 2.Rxe1#
  • Tries
    • 1.Re1?
      • threat
        • 2.Rxe2#
      • 1...Bxd4
        • 2.Sg3#
      • 1...Bxf4
        • 2.Sxc3#
      • 1...Sxd4
        • 2.Sg3#
      • 1...Sxf4
        • 2.Sxc3#
      • 1...c2!
    • 1.Qb6?
      • threat
        • 2.Sg3#
      • 1...Bxf4
        • 2.Sxc3#
      • 1...e1Q
        • 2.Rxe1#
      • 1...e1B
        • 2.Rxe1#
      • 1...d2!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Rxe2#
      • 1...Bxd4
        • 2.Sg3#
      • 1...Bxf4
        • 2.Sxc3#
      • 1...Sxd4
        • 2.Sg3#
      • 1...Sxf4
        • 2.Sxc3#
      • 1...dxc2
        • 2.Qxc2#
      • 1...d2
        • 2.Rxc3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Re2#
        • 2.Qxe1#
      • 1...e1B
        • 2.Re2#
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);SBLOCK,XP(D)::S(G)
    • B(e);SBLOCK,XP(E)::S(F),XP(b)
    • S(f);SBLOCK,XP(D)::S(G)
    • S(g);SBLOCK,XP(E)::S(F),XP(b)
    • P(a);OGATEB::R(B),XQ(a)
    • P(a);OGATEB::R(B),XS(a)
    • P(a);OGATEB::R(B),XB(a)
    • P(a);OGATEB::R(B),XR(a)
  • Tries
    • Try
      • R(B);N_PINP(c),P_PINP(a)
      • Threat
        • R(B),XP(a)
      • Vars
        • B(e);SBLOCK,XP(D)::S(G)
        • B(e);SBLOCK,XP(E)::S(F),XP(b)
        • S(f);SBLOCK,XP(D)::S(G)
        • S(g);SBLOCK,XP(E)::S(F),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • S(G)
      • Vars
        • B(e);SBLOCK,XP(E)::S(F),XP(b)
        • P(a);OGATEB::R(B),XQ(a)
        • P(a);OGATEB::R(B),XB(a)
      • Refutation
        • P(c);
  • Actual
    • R(B);N_PINP(c)
    • Threat
      • R(B),XP(a)
    • Vars
      • B(e);SBLOCK,XP(D)::S(G)
      • B(e);SBLOCK,XP(E)::S(F),XP(b)
      • S(f);SBLOCK,XP(D)::S(G)
      • S(g);SBLOCK,XP(E)::S(F),XP(b)
      • P(c);OGATE,P_SPINP(c),XR(B)::QAB(A),XP(c)
      • P(c);OGATEB::QAB(A)+R(B),XP(b)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XR(a)
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