MESON Chess Problem Database

Problem Display
PID: 137536 (3K4/3Q2p1/N2P4/p1Bk2p1/2n1n1N1/2PP4/4P3/8 w - - 0 1)

Mentasti, Gino

Prontuario del Problemista, 1977

3K4/3Q2p1/N2P4/p1Bk2p1/2n1n1N1/2PP4/4P3/8

#2

9 + 6

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Se3#
    • 1...Scxd6
      • 2.c4#
    • 1...Sxc5
      • 2.Sc7#
    • 1...Sexd6
      • 2.e4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qf7#
      • 1...Scxd6
        • 2.c4#
      • 1...Sexd6
        • 2.e4#
      • 1...Se5
        • 2.Se3#
      • 1...Sxc5!
    • 1.Se3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Sxe3!
    • 1.Sb4+?
      • 1...Kxc5
        • 2.Qc6#
      • 1...axb4!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qb7#
      • 1...Scxd6
        • 2.c4#
      • 1...Sxc5
        • 2.Sc7#
      • 1...Sexd6
        • 2.e4#
      • 1...Se5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::S(D)
    • S(a);OGATE,P_SPINS(a),XP(G)::P(B)
    • S(b);SBLOCK,XB(E)::S(F)
    • S(b);OGATE,P_SPINS(b),XP(G)::P(A)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • QAB(H)
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(G)::P(B)
        • S(b);OGATE,P_SPINS(b),XP(G)::P(A)
        • S(a);N_GUARD,SBLOCK::S(D)
      • Refutation
        • S(b);XB(E)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(H)
      • Refutation
        • S(a);XS(D)
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT,XB(E)::QAR1(H)
      • Refutation
        • P(c);XS(F)
  • Actual
    • K(I);S_FLIGHT
    • Threat
      • QAB(H)
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(G)::P(B)
      • S(b);SBLOCK,XB(E)::S(F)
      • S(b);OGATE,P_SPINS(b),XP(G)::P(A)
      • S(a);N_GUARD,SBLOCK::S(D)
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