MESON Chess Problem Database

Problem Display
PID: 51274 (1Q6/P2B4/8/1ppkp3/r7/4BR2/2nNnK2/1R1N4 w - - 0 1)

Wright Wood, S (= Wood, SW)

Manchester Guardian, 1956

1Q6/P2B4/8/1ppkp3/r7/4BR2/2nNnK2/1R1N4

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.a8Q#
      • 2.a8B#
    • 1...Rc4
      • 2.a8Q#
      • 2.a8B#
    • 1...Rd4
      • 2.a8Q#
      • 2.a8B#
    • 1...Re4
      • 2.a8Q#
      • 2.a8B#
    • 1...Rf4
      • 2.a8Q#
      • 2.a8B#
    • 1...Rg4
      • 2.a8Q#
      • 2.a8B#
    • 1...Rh4
      • 2.a8Q#
      • 2.a8B#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sg1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sf4
      • 2.Sc3#
    • 1...c4
      • 2.Rxb5#
    • 1...e4
      • 2.Rf5#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sxe3
        • 2.Qxe5#
      • 1...Re4
        • 2.a8Q#
        • 2.a8B#
      • 1...Rf4+!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Rxd4
        • 2.a8Q#
        • 2.a8B#
      • 1...Scxd4
        • 2.Se3#
      • 1...Sexd4
        • 2.Sc3#
      • 1...cxd4
        • 2.Rxb5#
      • 1...exd4
        • 2.Rf5#
      • 1...e4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD::P=Q
    • R(c);N_GUARD,P_PINR(F)::P=Q
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
    • P(e);OGATEB::R(A),XP(d)
    • P(g);OGATEB::R(F)
  • Tries
    • Try
      • R(F);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XB(E)::QAR1(I),XP(g)
        • R(c);N_GUARD::P=Q
      • Refutation
        • R(c);CHECK
  • Actual
    • B(E);
    • Threat
      • QAR1(I),XP(g)
    • Vars
      • K(f);P-FLIGHT,XB(E)::QAR2(I)
      • R(c);N_GUARD,SBLOCK,XB(E)::P=Q
      • S(a);N_GUARD,SBLOCK,XB(E)::S(B)
      • S(b);N_GUARD,SBLOCK,XB(E)::S(B)
      • P(e);OGATEB,SBLOCK,XB(E)::R(A),XP(d)
      • P(g);OGATEB,SBLOCK,XB(E)::R(F)
      • P(g);::QAR1(I)
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