MESON Chess Problem Database

Problem Display
PID: 55841 (2b3N1/2p3q1/2nbr1p1/2P2kPp/2B2B1Q/1N2pp1K/2pR1RP1/8 w - - 0 1)

van der Berg, Roelof

Den Haag Vandaag, 1988

2b3N1/2p3q1/2nbr1p1/2P2kPp/2B2B1Q/1N2pp1K/2pR1RP1/8

#2

11 + 12

102 Probleemblad 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Bd3#
  • Tries
    • 1.Sh6+?
      • 1...Ke4
        • 2.Bd5#
        • 2.Bxd6#
        • 2.gxf3#
      • 1...Qxh6!
    • 1.Rd5+?
      • 1...Ke4
        • 2.Bxd6#
        • 2.gxf3#
      • 1...Qe5
        • 2.Bd3#
      • 1...Be5
        • 2.Bd3#
      • 1...Se5
        • 2.Bd3#
      • 1...Re5!
    • 1.Qg4+?
      • 1...Ke4
        • 2.Bd5#
        • 2.gxf3#
      • 1...hxg4+!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qf4#
      • 1...Kxe5
        • 2.Rd5#
      • 1...Qxe5
        • 2.Sh6#
      • 1...Rxe5
        • 2.Rxf3#
      • 1...Bxe5
        • 2.Bd3#
      • 1...Sxe5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);S_CUTR(h)::B(F)
  • Tries
    • Try
      • S(K);CHECK
      • Refutation
        • Q(k);XS(K)
    • Try
      • R(A);CHECK
      • Vars
        • Q(k);P_SPINQ(k)::B(F)
        • B(g);P_SPINB(g)::B(F)
        • S(f);P_SPINS(f)::B(F)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(e);CHECK,XQ(H)
  • Actual
    • B(G);P_PINP(c)
    • Threat
      • QAR1(H)
    • Vars
      • K(d);N_SPINP(c),OGATEB,P-FLIGHT,XB(G)::R1(A)
      • Q(k);N_GUARD,SBLOCK,XB(G)::S(K)
      • R(h);SBLOCK,XB(G)::R(B),XP(c)
      • B(g);SBLOCK,XB(G)::B(F)
      • S(f);N_GUARD,SBLOCK,XB(G)::S(D)
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