MESON Chess Problem Database

Problem Display
PID: 187222 (3R4/1ppnN3/b1p1kPB1/1Qb1P1pK/3p4/1N6/8/4R3 w - - 0 1)

Anonymous

12. Kwik-Toernooi, 1979

3R4/1ppnN3/b1p1kPB1/1Qb1P1pK/3p4/1N6/8/4R3

#2

9 + 9

102 Probleemblad 1979

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sxd4#
    • 1...Bb4
      • 2.Sxd4#
    • 1...Bd6
      • 2.Sxd4#
    • 1...Bxe7
      • 2.Sxd4#
    • 1...Sb6
      • 2.Sxc5#
    • 1...Sb8
      • 2.Sxc5#
    • 1...Sf8
      • 2.Sxc5#
  • Tries
    • 1.Qxc6+?
      • 1...Bd6
        • 2.Sxd4#
        • 2.Qd5#
        • 2.Qxd7#
      • 1...bxc6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sxc7#
      • 1...Sxf6+
        • 2.exf6#
      • 1...Kxd5
        • 2.Bf7#
      • 1...Sxe5
        • 2.Sxc5#
      • 1...cxd5
        • 2.Qxd7#
      • 1...Bb6
        • 2.Re8#
      • 1...Bd6
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • B(b);N_GUARD::S(B),XP(a)
    • B(b);N_GUARD,XS(H)::S(B),XP(a)
    • S(i);N_GUARD::S(B),XB(b)
  • Tries
    • Try
      • Q(C);CHECK,XP(e)
      • Refutation
        • P(g);XQ(C)
  • Actual
    • S(H);
    • Threat
      • S(H),XP(h)
    • Vars
      • S(i);CHECK,OGATE,XP(F)::R(A)+P(D),XS(i)
      • K(f);P_SPINB(b),P_SPINS(i),S_FLIGHT,XS(H)::B(G)
      • S(i);N_GUARD,P_SPINS(i),XP(D)::S(B),XB(b)
      • P(e);OGATE,XS(H)::QAB1(C),XS(i)
      • B(b);N_GUARD::R(I)
      • B(b);N_GUARD::S(B),XP(a)
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