MESON Chess Problem Database

Problem Display
PID: 233432 (2K1R3/p6Q/7p/4b2r/1PPk4/NR6/5Pp1/4qb2 w - - 0 1)

Kupper, Josef

Freie Presse, 2008

2K1R3/p6Q/7p/4b2r/1PPk4/NR6/5Pp1/4qb2

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.fxe3#
    • 1...Qe4
      • 2.Qxa7#
    • 1...Bd3
      • 2.Rxd3#
      • 2.Qxd3#
  • Tries
    • 1.Qd7+?
      • 1...Ke4
        • 2.Qg4#
      • 1...Bd6!
    • 1.Qf7?
      • threat
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Bd6
        • 2.Sc2#
      • 1...Qe4
        • 2.Sb5#
        • 2.Qxa7#
      • 1...Bh2
        • 2.Sc2#
      • 1...Bg3
        • 2.Sc2#
      • 1...Bf4
        • 2.Sc2#
      • 1...Bf6
        • 2.Sc2#
      • 1...Bc7
        • 2.Sc2#
      • 1...Bg7
        • 2.Sc2#
      • 1...Bb8
        • 2.Sc2#
      • 1...Bh8
        • 2.Sc2#
      • 1...Ke4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Ke4
        • 2.Qg4#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Qe4
        • 2.Sb5#
      • 1...Bh2
        • 2.Sc2#
      • 1...Bg3
        • 2.Sc2#
      • 1...Bf4
        • 2.Sc2#
      • 1...Bd6
        • 2.Sc2#
      • 1...Bf6
        • 2.Sc2#
      • 1...Bc7
        • 2.Sc2#
      • 1...Bg7
        • 2.Sc2#
      • 1...Bb8
        • 2.Sc2#
      • 1...Bh8
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • Q(a);OGATE::P(A),XQ(a)
    • Q(a);SBLOCK::QAB(F),XP(h)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(e)::QAR2(F)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(b);OGATE,XP(E)::QAR1(F),XB(b)
        • B(e);::S(B)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(e)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(e)::QAR2(F)
      • B(b);OGATE,XP(E)::QAR1(F),XB(b)
      • Q(a);SBLOCK::S(B)
      • B(e);::S(B)
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