MESON Chess Problem Database

Problem Display
PID: 97921 (6n1/2P3B1/q1pK4/2PpNk1p/3Q1NpP/3RR1P1/2r5/bB1n1b2 w - - 0 1)

Haring, Jacobus

Problemas, 1972

6n1/2P3B1/q1pK4/2PpNk1p/3Q1NpP/3RR1P1/2r5/bB1n1b2

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.c8Q#
      • 2.c8B#
    • 1...Qc4
      • 2.c8Q#
      • 2.c8B#
    • 1...Qb5
      • 2.c8Q#
      • 2.c8B#
    • 1...Qa2
      • 2.c8Q#
      • 2.c8B#
    • 1...Qa3
      • 2.c8Q#
      • 2.c8B#
    • 1...Qa4
      • 2.c8Q#
      • 2.c8B#
    • 1...Qa5
      • 2.c8Q#
      • 2.c8B#
    • 1...Qb6
      • 2.c8Q#
      • 2.c8B#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Re5#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Re2
        • 2.Rd2#
      • 1...Bxd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qf4#
      • 1...Bxd4
        • 2.Sxd4#
      • 1...Qc4
        • 2.c8Q#
        • 2.c8B#
      • 1...Qa4
        • 2.c8Q#
        • 2.c8B#
      • 1...Rc4
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(i);N_GUARD,XR(B)::P=Q
    • Q(i);N_GUARD::P=Q
    • Q(i);N_GUARD,P_PINP(H)::P=Q
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(C)
      • Vars
        • S(b);XR(C)::S(I),XS(b)
        • R(d);OGATEB::B(A)+R(B)
      • Refutation
        • B(a);XQ(E)
  • Actual
    • S(F);
    • Threat
      • QAR1(E)
    • Vars
      • B(a);XQ(E)::S(F),XB(a)
      • Q(i);N_GUARD::P=Q
      • R(d);OGATEB::B(A)+R(B)
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