MESON Chess Problem Database

Problem Display
PID: 45958 (b7/1B2Nr1p/2p5/4nRBK/4k3/4pp2/8/n2Q4 w - - 0 1)

Groeneveld, Cornelis

2nd HM., Problem Observer, 2002

b7/1B2Nr1p/2p5/4nRBK/4k3/4pp2/8/n2Q4

#2

6 + 9

102 Probleemblad 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe7
      • 2.Rf4#
    • 1...Rg7
      • 2.Rf4#
  • Tries
    • 1.Bxc6+?
      • 1...Sxc6
        • 2.Qd5#
      • 1...Bxc6!
    • 1.Qa4+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kd3!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Rxe5#
      • 1...Kxf5
        • 2.Sd4#
      • 1...Rxf5
        • 2.Qd4#
      • 1...Sxc6
        • 2.Qd5#
      • 1...Re7
        • 2.Rf4#
      • 1...Sd3
        • 2.Qxf3#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sg4
        • 2.Qd5#
      • 1...Sg6
        • 2.Qd5#
      • 1...Sd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD,XS(F)::R1(B)
    • R(g);N_GUARD::R1(B)
  • Tries
    • Try
      • B(E);CHECK,XP(f)
      • Vars
        • S(e);XB(E)::QAB1(A)
      • Refutation
        • B(i);XB(E)
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR2(A),XS(e)
      • Refutation
        • K(d);N_SPINP(f),S_FLIGHT
  • Actual
    • S(F);XP(f)
    • Threat
      • R1(B),XS(e)
    • Vars
      • K(d);S_FLIGHT,XR(B)::S(F)
      • R(g);P_PINB(C),SBLOCK,XR(B)::QAR1(A)
      • S(e);P_SPINS(e),XS(F)::QAB1(A)
      • R(g);N_GUARD::R1(B)
      • S(e);N_GUARD,SBLOCK::QAB1(A),XP(c)
      • S(e);::QAB1(A)
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