MESON Chess Problem Database

Problem Display
PID: 135392 (8/2bK2p1/3BN1Pp/4Q2N/r1Rp2rk/p6p/7p/3B3n w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1999

8/2bK2p1/3BN1Pp/4Q2N/r1Rp2rk/p6p/7p/3B3n

#2

8 + 11

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Be7#
      • 2.Qxe4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...d3
      • 2.Be7#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qxg4#
      • 1...Kxh5
        • 2.Qxg4#
      • 1...Rxe4
        • 2.Be7#
      • 1...Rf4
        • 2.Be7#
        • 2.Qxf4#
      • 1...Sf2!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sf3#
      • 1...Rxd4
        • 2.Qe7#
      • 1...Re4
        • 2.Be7#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rg5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATEB::QAR2(C),XR(g)
    • P(f);P_SPINR(g)::B(E)
  • Tries
    • Try
      • Q(C);P_PINR(g)
      • Threat
        • QAR1(C),XR(g)
      • Vars
        • K(h);P-FLIGHT,XS(D)::QAB1(C),XR(g)
        • R(g);N_SPINR(g),XQ(C)::B(E)
      • Refutation
        • S(a);
  • Actual
    • S(F);XP(f)
    • Threat
      • S(F)
    • Vars
      • R(g);N_GUARD,P_PINB(E),P_SPINR(g),XS(F)::QAB(C)
      • R(g);N_GUARD::B(E)
      • R(g);OGATEB::QAR2(C),XR(g)
      • R(g);SBLOCK::R(B)+S(F),DCHECK
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