MESON Chess Problem Database

Problem Display
PID: 239467 (q4N1b/2pP1p2/2N2P2/1RQK1kpB/2P1p3/3bPn2/5R2/B7 w - - 0 1)

Barnes, Barry Peter

Magyar Sakkelet, 1964

q4N1b/2pP1p2/2N2P2/1RQK1kpB/2P1p3/3bPn2/5R2/B7

#2

12 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6+
      • 2.Kxc6#
    • 1...Qa2
      • 2.Se7#
    • 1...Qa3
      • 2.Se7#
    • 1...Qa4
      • 2.Se7#
    • 1...Qa5
      • 2.Se7#
    • 1...Qa6
      • 2.Se7#
    • 1...Qa7
      • 2.Se7#
    • 1...Qb8
      • 2.Se7#
    • 1...Qc8
      • 2.Se7#
      • 2.dxc8Q#
      • 2.dxc8B#
    • 1...Bxc4+
      • 2.Kxc4#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qe5#
      • 1...Qxc6+
        • 2.Kxc6#
      • 1...Bxc4+
        • 2.Kxc4#
      • 1...Qxa1
        • 2.Se7#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Qe8!
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...Qxc6+
        • 2.Kxc6#
      • 1...Bxc4+
        • 2.Kxc4#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Qe8
        • 2.Sd4#
      • 1...Qxa1!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Qxc6+
        • 2.Kxc6#
      • 1...Bxc4+
        • 2.Kxc4#
      • 1...Qxa1
        • 2.Se7#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...cxd6
        • 2.Kxd6#
      • 1...Qe8
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(h);CHECK,XS(I)::QAR(F)+K(G),XQ(h)
    • Q(h);N_PINS(I),P_PINP(D)::S(I)
    • Q(h);N_PINS(I)::S(I)
    • B(a);CHECK,XP(D)::QAR(F)+K(G),XB(a)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • Q(h);CHECK,XS(I)::R(E)+K(G),XQ(h)
        • B(a);CHECK,XP(D)::R(E)+K(G),XB(a)
        • Q(h);N_PINS(I),XB(A)::S(I)
        • B(i);OGATE,XP(J)::QAR1(F),XB(i)
      • Refutation
        • Q(h);N_PINS(I)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • Q(h);CHECK,XS(I)::R(E)+K(G),XQ(h)
        • B(a);CHECK,XP(D)::R(E)+K(G),XB(a)
        • B(i);OGATE,XP(J)::QAR1(F),XB(i)
        • Q(h);N_PINS(I)::S(I)
      • Refutation
        • Q(h);N_PINS(I),XB(A)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • Q(h);CHECK,XS(I)::R(E)+K(G),XQ(h)
      • B(a);CHECK,XP(D)::R(E)+K(G),XB(a)
      • Q(h);N_PINS(I),XB(A)::S(I)
      • B(i);OGATE,XP(J)::QAR1(F),XB(i)
      • P(f);XQ(F)::R(E)+K(G),XP(f)
      • Q(h);N_PINS(I)::S(I)
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