MESON Chess Problem Database

Problem Display
PID: 202224 (K7/8/2p2Q2/R1pk1p1b/7r/4P3/1N1P1N2/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Springaren, 1988

K7/8/2p2Q2/R1pk1p1b/7r/4P3/1N1P1N2/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.e4#
  • Tries
    • 1.Sbd3?
      • threat
        • 2.Rxc5#
      • 1...Kc4
        • 2.Qe6#
      • 1...Rc4
        • 2.Qe5#
      • 1...Ra4!
    • 1.Qxc6+?
      • 1...Ke5
        • 2.Sbd3#
        • 2.Sfd3#
        • 2.Rxc5#
      • 1...Kxc6!
    • 1.d4?
      • threat
        • 2.Rxc5#
        • 2.Qe5#
      • 1...Re4
        • 2.Rxc5#
      • 1...Rxd4!
  • Keys
    • 1.Sfd3!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Re4
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,S_CUTR(a)::P(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(E),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB(F)
        • R(a);SBLOCK::QAR1(F)
      • Refutation
        • R(a);P_PINR(E)
    • Try
      • Q(F);CHECK,XP(f)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XQ(F)
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::R1(E),XP(b)
      • Refutation
        • R(a);XP(B)
  • Actual
    • S(C);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);N_SPINP(b),S_FLIGHT::QAB(F),XP(f)
      • R(a);SBLOCK::R1(E),XP(b)
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