MESON Chess Problem Database

Problem Display
PID: 216863 (1BrRn3/q1p5/1p1r1p1N/4kB1p/nN6/Q2pP3/3K4/8 w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1998

1BrRn3/q1p5/1p1r1p1N/4kB1p/nN6/Q2pP3/3K4/8

#2

8 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sc6#
    • 1...Rd5
      • 2.Sc6#
      • 2.Rxd5#
    • 1...Rc6
      • 2.Sxd3#
      • 2.Sxc6#
      • 2.Rd5#
    • 1...Re6
      • 2.Sxd3#
      • 2.Rd5#
  • Tries
    • 1.Rxe8+?
      • 1...Re6
        • 2.Rxe6#
      • 1...Rxe8!
    • 1.Qc3+?
      • 1...Rd4
        • 2.Sxd3#
        • 2.Sc6#
        • 2.Rd5#
        • 2.Qxd4#
      • 1...Sxc3!
  • Keys
    • 1.Qxd3!
      • threat
        • 2.Sf7#
      • 1...Rxd3+
        • 2.Sxd3#
      • 1...Rd7
        • 2.Sc6#
      • 1...c5
        • 2.Qd5#
      • 1...c6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD,P_SPINP(i)::S(D)
  • Tries
    • Try
      • R(H);CHECK,XS(k)
      • Vars
        • R(f);N_GUARD,P_SPINP(i),P_SPINR(f)::R1(H),XR(f)
      • Refutation
        • R(j);XR(H)
    • Try
      • Q(B);CHECK
      • Refutation
        • S(b);XQ(B)
  • Actual
    • Q(B);P_SPINQ(B),XP(a)
    • Threat
      • S(F)
    • Vars
      • R(f);CHECK,P_SPINP(i),XQ(B)::S(D),XR(f)
      • R(f);N_GUARD,P_SPINP(i)::S(D)
      • P(i);P_SPINR(f)::QAR1(B)
      • P(i);P_SPINR(f)::QAB1(B)
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