MESON Chess Problem Database

Problem Display
PID: 242656 (4NR2/rRp2p2/2BBk1p1/1P2b1Pr/p4P1p/Q7/8/7K w - - 0 1)

Gockel, Hubert

Problem-Forum, 2005

4NR2/rRp2p2/2BBk1p1/1P2b1Pr/p4P1p/Q7/8/7K

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Sg7#
    • 1...Bf6
      • 2.Qh3#
    • 1...Bg7
      • 2.Sxg7#
    • 1...f5
      • 2.Sxc7#
      • 2.Qa2#
    • 1...f6
      • 2.Sg7#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Sg7#
      • 1...Kf5
        • 2.Qh3#
      • 1...Rh7!
    • 1.Qe3?
      • threat
        • 2.Qxe5#
      • 1...Kf5
        • 2.Bd7#
      • 1...cxd6
        • 2.Sg7#
      • 1...f6
        • 2.Rxf6#
      • 1...Rxg5!
    • 1.f5+?
      • 1...gxf5
        • 2.Sxc7#
        • 2.Qa2#
      • 1...Kxf5!
  • Keys
    • 1.Rxf7!
      • threat
        • 2.Qa2#
      • 1...Kxf7
        • 2.Qa2#
      • 1...cxd6
        • 2.Qh3#
      • 1...Bf6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD,XP(C)::S(I)
    • B(c);S_CUTP(i)::QAB(B)
    • B(c);N_GUARD::S(I),XB(c)
    • P(i);S_CUTB(c)::S(I)
  • Tries
    • Try
      • B(G);XB(c)
      • Threat
        • S(I)
      • Vars
        • K(e);P_SPINP(i),S_FLIGHT::QAB(B)
      • Refutation
        • R(d);
    • Try
      • Q(B);P_PINB(c)
      • Threat
        • QAR1(B),XB(c)
      • Vars
        • K(e);N_SPINB(c),P_SPINP(i),S_FLIGHT::B(F)
        • P(h);SBLOCK,XB(G)::S(I)
        • P(i);OGATE::R1(J),XP(i)
      • Refutation
        • R(d);XP(E)
    • Try
      • P(C);CHECK
      • Refutation
        • K(e);P_SPINP(i),S_FLIGHT,XP(C)
  • Actual
    • R(J);XP(i)
    • Threat
      • QAB(B)
    • Vars
      • K(e);P_SPINP(h),S_FLIGHT,XR(J)::QAB(B)
      • P(h);XB(G)::QAB(B)
      • B(c);N_GUARD::R1(J),XB(c)
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