MESON Chess Problem Database

Problem Display
PID: 41557 (4N3/2qn1p2/3B4/1P1k2N1/1Qp5/1RR2p2/8/2K2b1B w - - 0 1)

Gockel, Hubert

Die Schwalbe, 2002

4N3/2qn1p2/3B4/1P1k2N1/1Qp5/1RR2p2/8/2K2b1B

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.Qxd6#
    • 1...cxb3
      • 2.Sxc7#
      • 2.Bxf3#
      • 2.Qe4#
  • Tries
    • 1.Sf6+?
      • 1...Kd4
        • 2.Sxf3#
      • 1...Sxf6!
    • 1.Bxc7?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Sc5!
    • 1.Rd3+?
      • 1...cxd3+
        • 2.Sxc7#
      • 1...Bxd3!
  • Keys
    • 1.Rxf3!
      • threat
        • 2.Rfd3#
      • 1...cxb3+
        • 2.Sxc7#
      • 1...Kd4
        • 2.Rf4#
      • 1...Qxd6
        • 2.Qxd6#
      • 1...Bg2
        • 2.Qd2#
      • 1...Bd3
        • 2.Rfxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(e);OGATE,XB(H)::QAR1(E),XQ(e)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT,P_SPINP(c)::S(G),XP(b)
      • Refutation
        • S(f);XS(I)
    • Try
      • B(H);XQ(e)
      • Threat
        • QAR1(E)
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT,P_SPINP(c)::QAR2(E)
      • Refutation
        • S(f);
    • Try
      • R(D);CHECK
      • Vars
        • P(c);CHECK,XR(D)::S(I),XQ(e)
      • Refutation
        • B(a);XR(D)
  • Actual
    • R(D);XP(b)
    • Threat
      • B(B)+R(D),DCHECK
    • Vars
      • P(c);CHECK,XR(C)::S(I),XQ(e)
      • K(d);P-FLIGHT,P_SPINP(c)::R(D)
      • Q(e);OGATE,XB(H)::QAR1(E),XQ(e)
      • B(a);N_GUARD::QAR(E)
      • B(a);::B(B)+R(D),DCHECK,XB(a)
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