MESON Chess Problem Database

Problem Display
PID: 158078 (8/8/1Nppp3/3PkpQ1/r2p4/5P2/4P1n1/3R2KB w - - 0 1)

Agostini, Valerio

Mariani, Stefano

Best Problems, 2009

8/8/1Nppp3/3PkpQ1/r2p4/5P2/4P1n1/3R2KB

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.f4#
    • 1...Se3
      • 2.f4#
    • 1...Sf4
      • 2.Qg7#
    • 1...Sh4
      • 2.f4#
    • 1...cxd5
      • 2.Sd7#
  • Tries
    • 1.Qg3+?
      • 1...Sf4
        • 2.Qg7#
      • 1...f4
        • 2.Qg5#
      • 1...Kf6!
    • 1.e4?
      • threat
        • 2.Sd7#
      • 1...exd5
        • 2.Qxf5#
      • 1...Ra7
        • 2.Sc4#
      • 1...d3!
    • 1.f4+?
      • 1...Sxf4
        • 2.Sd7#
        • 2.Qg7#
      • 1...Ke4!
  • Keys
    • 1.e3!
      • threat
        • 2.Qg7#
      • 1...Sxe3
        • 2.f4#
      • 1...dxe3
        • 2.Sd7#
      • 1...exd5
        • 2.Qe7#
      • 1...Ra7
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::P(E)
    • S(a);SBLOCK::QAB(G)
    • P(f);SBLOCK,XP(F)::S(H)
  • Tries
    • Try
      • Q(G);CHECK,N_PINP(e)
      • Vars
        • S(a);P_SPINS(a),SBLOCK::QAB(G)
        • P(e);OGATEB,P_SPINP(e)::QAR2(G)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(D);
      • Threat
        • S(H)
      • Vars
        • P(h);N_GUARD,XP(F)::QAR1(G),XP(e)
        • R(b);N_GUARD::S(H)
      • Refutation
        • P(c);
    • Try
      • P(E);CHECK
      • Refutation
        • K(d);N_SPINP(e),P-FLIGHT,P_SPINS(a)
  • Actual
    • P(D);
    • Threat
      • QAB(G)
    • Vars
      • S(a);N_GUARD,XP(D)::P(E)
      • P(c);XP(D)::S(H)
      • P(h);OGATEB,XP(F)::QAR2(G)
      • R(b);N_GUARD::P(D),XP(c)
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