MESON Chess Problem Database

Problem Display
PID: 163321 (7Q/2KPPr2/3R1r2/3B1N2/1N1p4/Ppk1bR2/4p2p/2Bb2q1 w - - 0 1)

Gockel, Hubert

idee & form, 1993

7Q/2KPPr2/3R1r2/3B1N2/1N1p4/Ppk1bR2/4p2p/2Bb2q1

#2

11 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Rc6#
    • 1...Rxd6
      • 2.Qxd4#
    • 1...Re6
      • 2.Qxd4#
    • 1...Rg6
      • 2.Qxd4#
    • 1...Rh6
      • 2.Qxd4#
  • Tries
    • 1.Be6?
      • threat
        • 2.Rc6#
      • 1...Rxf5
        • 2.Qxd4#
      • 1...Rxe6
        • 2.Qxd4#
      • 1...d3
        • 2.Rxd3#
      • 1...Qg3!
    • 1.Rxe3+?
      • 1...dxe3
        • 2.Rc6#
      • 1...d3
        • 2.Rxd3#
        • 2.Rc6#
      • 1...Qxe3!
    • 1.Qxf6?
      • threat
        • 2.Rc6#
        • 2.Qxd4#
      • 1...Qg3
        • 2.Qxd4#
      • 1...Qg4
        • 2.Rxe3#
        • 2.Rc6#
      • 1...Qg7
        • 2.Rxe3#
        • 2.Rc6#
      • 1...Rxf6!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxd4#
      • 1...Rxf5
        • 2.Rc6#
      • 1...Qg4
        • 2.Qe1#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(i);N_GUARD,P_SPINP(h),XS(F)::R(G)
    • R(i);OGATE,P_SPINP(h),XR(G)::QAB1(K),XP(h)
    • R(i);OGATE,P_SPINP(h)::QAB1(K),XP(h)
  • Tries
    • Try
      • B(E);
      • Threat
        • R(G)
      • Vars
        • R(i);OGATE,P_SPINP(h),XS(F)::QAB1(K),XP(h)
        • R(i);OGATE,P_SPINP(h),XB(E)::QAB1(K),XP(h)
        • P(h);N_SPINB(g),OGATE,P_SPINR(i)::R1(G),XP(h)
      • Refutation
        • Q(b);P_PINR(G)
    • Try
      • R(C);CHECK,XB(g)
      • Vars
        • P(h);P_SPINR(i),XR(C)::R(G)
      • Refutation
        • Q(b);XR(C)
    • Try
      • Q(K);P_PINP(h),XR(i)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);P_PINR(G)::QAB1(K),XP(h)
      • Refutation
        • R(j);N_SPINP(h),XQ(K)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K),XP(h)
    • Vars
      • R(i);N_GUARD,XS(F)::R(G)
      • Q(b);N_GUARD::QAB(K)
      • P(h);N_SPINB(g),OGATE::QAR1(K)
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