MESON Chess Problem Database

Problem Display
PID: 76730 (K7/8/N5pB/3R2nq/1RBnpQ2/2k3N1/1pppp3/6bb w - - 0 1)

Sedgwick, Stanley

Zrenyanin, 1949

K7/8/N5pB/3R2nq/1RBnpQ2/2k3N1/1pppp3/6bb

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Sdf3
      • 2.Sxe2#
    • 1...Sb5
      • 2.Qxd2#
    • 1...Sf5
      • 2.Qxd2#
    • 1...Sc6
      • 2.Qxd2#
    • 1...Sde6
      • 2.Qxd2#
    • 1...Sgf3
      • 2.Sxe4#
    • 1...Sh3
      • 2.Qxd2#
    • 1...Sge6
      • 2.Qxd2#
    • 1...Sf7
      • 2.Qxd2#
    • 1...Sh7
      • 2.Qxd2#
    • 1...e3
      • 2.Qxd4#
  • Tries
    • 1.Sxe2+?
      • 1...Sxe2
        • 2.Qxd2#
      • 1...Qxe2!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Rc5#
      • 1...Sxb5
        • 2.Qxd2#
      • 1...Sb3
        • 2.Rc4#
      • 1...Sdf3
        • 2.Sxe2#
      • 1...Sf5
        • 2.Qxd2#
      • 1...Sc6
        • 2.Qxd2#
      • 1...Sde6
        • 2.Qxd2#
      • 1...Sgf3
        • 2.Sxe4#
      • 1...Sh3
        • 2.Qxd2#
      • 1...Sge6
        • 2.Qxd2#
      • 1...Sf7
        • 2.Qxd2#
      • 1...Sh7
        • 2.Qxd2#
      • 1...e3
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR2(D)
    • B(a);N_GUARD::QAR2(D),XB(a)
    • S(h);N_GUARD,S_CUTQ(k)::S(A),XP(f)
    • S(h);::QAB1(D),XP(e)
    • S(j);N_GUARD,S_CUTB(b)::S(A),XP(i)
    • S(j);::QAB1(D),XP(e)
    • P(i);OGATE,P_PINR(E)::QAB1(D),XS(h)
  • Tries
    • Try
      • S(A);CHECK,XP(f)
      • Vars
        • S(h);XS(A)::QAB1(D),XP(e)
      • Refutation
        • Q(k);XS(A)
  • Actual
    • B(C);
    • Threat
      • R(E)
    • Vars
      • S(h);XB(C)::QAB1(D),XP(e)
      • S(h);SBLOCK::R1(B)
      • S(h);N_GUARD,S_CUTQ(k)::S(A),XP(f)
      • S(h);::QAB1(D),XP(e)
      • S(j);N_GUARD,S_CUTB(b)::S(A),XP(i)
      • S(j);::QAB1(D),XP(e)
      • P(i);OGATE,P_PINR(E)::QAB1(D),XS(h)
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