MESON Chess Problem Database

Problem Display
PID: 33565 (8/4N1pB/2N3R1/1p2qrP1/1PRnk3/5np1/K3P3/2B4Q w - - 0 1)

Boumeester, Hendrikus Bernardus Franciscus

Willemsens, Luis Cornelis

To Mat, 1954

8/4N1pB/2N3R1/1p2qrP1/1PRnk3/5np1/K3P3/2B4Q

#2

11 + 8

102 Probleemblad 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Rxd4#
    • 1...Qc7
      • 2.Rxd4#
    • 1...Qb8
      • 2.Rxd4#
    • 1...Qe6
      • 2.Rxe6#
    • 1...Qxe7
      • 2.Rxd4#
    • 1...Rxg5
      • 2.Qxf3#
  • Tries
    • 1.Bd2?
      • threat
        • 2.Qb1#
      • 1...Qxe7
        • 2.Rxd4#
      • 1...bxc4!
  • Keys
    • 1.Re6!
      • threat
        • 2.Bxf5#
        • 2.Rxd4#
        • 2.Rxe5#
        • 2.Qxf3#
      • 1...Qxe6
        • 2.Qxf3#
      • 1...bxc4
        • 2.Rxe5#
      • 1...g2
        • 2.Bxf5#
      • 1...g6
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::R1(F),XS(c)
    • Q(f);OGATEB,P_PINR(F)::R(I),XQ(f)
    • Q(f);N_GUARD,XS(J)::R1(F),XS(c)
    • R(g);N_GUARD,XP(G)::QAB1(B),XS(a)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB(B)
      • Vars
        • Q(f);N_GUARD,XS(J)::R1(F),XS(c)
      • Refutation
        • P(e);XR(F)
  • Actual
    • R(I);P_PINQ(f),P_PINR(g)
    • Threat
      • DUALS(4)
    • Vars
      • Q(f);N_SPINQ(f),P_PINR(F),XR(I)::QAB1(B),XS(a)
      • P(e);XR(F)::R1(I),XQ(f)
      • P(b);N_SPINS(a),P_SPINS(c)::B(K),XR(g)
      • P(h);N_SPINR(g)::R1(F),XS(c)
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