MESON Chess Problem Database

Problem Display
PID: 75789 (3Q3K/1pp2pp1/3np3/1pP5/1N1k1N2/8/p2P4/2R1R2n w - - 0 1)

Retter, Yosef

5th Place, League of Macedonian Problemists, 2004-2005

3Q3K/1pp2pp1/3np3/1pP5/1N1k1N2/8/p2P4/2R1R2n

#2

8 + 10

5085 The Macedonian Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Sc6#
    • 1...c6
      • 2.Qxd6#
    • 1...f5
      • 2.Sxe6#
    • 1...f6
      • 2.Sxe6#
  • Tries
    • 1.Sc2+?
      • 1...Kxc5
        • 2.Qxc7#
      • 1...Kc4!
    • 1.Qh4?
      • threat
        • 2.Sxe6#
      • 1...e5
        • 2.Se2#
        • 2.Se6#
      • 1...Se4!
    • 1.Qg5?
      • threat
        • 2.Qe5#
      • 1...Sc4
        • 2.Sc2#
      • 1...Se4
        • 2.Se2#
      • 1...e5
        • 2.Qxe5#
      • 1...f5
        • 2.Sxe6#
      • 1...f6
        • 2.Sxe6#
      • 1...Sf5!
    • 1.Qf6+?
      • 1...e5
        • 2.Qxe5#
      • 1...gxf6!
  • Keys
    • 1.Qxc7!
      • threat
        • 2.Qxd6#
      • 1...Sc4
        • 2.Sc2#
      • 1...Se4
        • 2.Se2#
      • 1...Sf5
        • 2.Qe5#
      • 1...Sc8
        • 2.Qe5#
      • 1...Se8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • P(g);N_GUARD::S(D)
    • P(h);N_GUARD::QAR2(G),XS(e)
    • P(i);N_GUARD::S(E),XP(f)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT,XP(F)::QAR2(G),XP(h)
      • Refutation
        • K(c);N_SPINS(e),P-FLIGHT
    • Try
      • Q(G);N_PINS(e)
      • Threat
        • QAR(G)+S(E),DCHECK,XP(f)
      • Refutation
        • S(e);
    • Try
      • Q(G);N_PINS(e)
      • Threat
        • QAB1(G)
      • Vars
        • S(e);SBLOCK::S(D)
        • S(e);SBLOCK::S(E)
        • P(f);::QAB1(G),XP(f)
        • P(i);N_GUARD::S(E),XP(f)
      • Refutation
        • S(e);
    • Try
      • Q(G);CHECK,N_PINS(e)
      • Vars
        • P(f);P_SPINP(f)::QAB1(G),XP(f)
      • Refutation
        • P(j);XQ(G)
  • Actual
    • Q(G);N_PINS(e),XP(h)
    • Threat
      • QAR2(G),XS(e)
    • Vars
      • S(e);SBLOCK::S(D)
      • S(e);SBLOCK::S(E)
      • S(e);OGATE::QAB1(G)
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