MESON Chess Problem Database

Problem Display
PID: 50065 (3R4/8/B2Np3/3bQ1p1/1p1K1p2/2P5/2p1PPp1/brrkB1R1 w - - 0 1)

Degener, Udo

2nd HM., Freie Presse, 1995

3R4/8/B2Np3/3bQ1p1/1p1K1p2/2P5/2p1PPp1/brrkB1R1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc3+
      • 2.Bxc3#
    • 1...bxc3
      • 2.Bxc3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Bd2#
      • 1...Bxc3+
        • 2.Bxc3#
      • 1...Bxc4
        • 2.Kxc4#
      • 1...Be4!
    • 1.Se4?
      • threat
        • 2.Bd2#
      • 1...Bxc3+
        • 2.Bxc3#
      • 1...Bxe4
        • 2.Kxe4#
      • 1...Bc4!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Qd4#
      • 1...Bxc3
        • 2.Bxc3#
      • 1...Bc4
        • 2.Sxc4#
      • 1...Be4
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);CHECK,OGATE,XP(E)::R(B)+B(A),XB(a)
    • P(g);OGATE,XP(E)::R(B)+B(A),XP(g)
  • Tries
    • Try
      • S(I);
      • Threat
        • R(B)+B(A)
      • Vars
        • B(a);CHECK,OGATE,XP(E)::R(B)+B(A),XB(a)
        • B(i);XS(I)::R(J)+K(F),XB(i)
      • Refutation
        • B(i);
    • Try
      • S(I);
      • Threat
        • R(B)+B(A)
      • Vars
        • B(a);CHECK,OGATE,XP(E)::R(B)+B(A),XB(a)
        • B(i);XS(I)::R(J)+K(F),XB(i)
      • Refutation
        • B(i);
  • Actual
    • K(F);N_SPINP(E),S_FLIGHT
    • Threat
      • QAR(G)
    • Vars
      • B(a);OGATE,XP(E)::R(B)+B(A),XB(a)
      • B(i);::R(J)+S(I),XB(i)
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