MESON Chess Problem Database

Problem Display
PID: 82431 (8/1Np2n2/2k1B3/8/K3pN1r/pR1P4/2p3Qb/2q1r1B1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problem-Forum, 2001

8/1Np2n2/2k1B3/8/K3pN1r/pR1P4/2p3Qb/2q1r1B1

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Qxc2#
    • 1...Rd1
      • 2.Qxe4#
    • 1...Rf1
      • 2.Qxe4#
    • 1...Rxg1
      • 2.Qxe4#
    • 1...Sd6
      • 2.Sa5#
      • 2.Sd8#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Se7#
      • 1...Bd6
        • 2.Sa5#
      • 1...Qg5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Se7#
      • 1...exd3+
        • 2.Sb4#
      • 1...e3+
        • 2.Sf4#
      • 1...Qg5
        • 2.Qxc2#
      • 1...Bd6
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD,XS(F)::QAR(B),XP(c)
    • R(b);N_GUARD::QAB(B),XP(f)
    • R(b);N_GUARD,XB(A)::QAB(B),XP(f)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(d);SBLOCK::S(H)
      • Refutation
        • Q(a);
  • Actual
    • S(F);N_PINP(f)
    • Threat
      • S(F)
    • Vars
      • P(f);CHECK,XP(D)::QAB(B)+S(F),DCHECK
      • P(f);CHECK::QAB(B)+S(F)
      • Q(a);N_GUARD::QAR(B),XP(c)
      • B(d);SBLOCK::S(H)
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