MESON Chess Problem Database

Problem Display
PID: 246604 (1b3Q1B/5N2/3ppp2/8/1Knk4/2N5/b1P1PP2/8 w - - 0 1)

Atayants, Grigory Sergeevich

Moscow Ty., 2014

1b3Q1B/5N2/3ppp2/8/1Knk4/2N5/b1P1PP2/8

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.e3#
    • 1...Sd2
      • 2.e3#
    • 1...Sa3
      • 2.e3#
    • 1...Sa5
      • 2.e3#
    • 1...Se5
      • 2.e3#
    • 1...Sb6
      • 2.e3#
    • 1...d5
      • 2.Qc5#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sf3#
      • 1...Ke5
        • 2.Qxf6#
      • 1...Se5
        • 2.e3#
      • 1...Sd2!
    • 1.Sd8?
      • threat
        • 2.Sc6#
      • 1...Ke5
        • 2.Qxf6#
      • 1...Se5
        • 2.e3#
      • 1...Sa5!
    • 1.Bxf6+?
      • 1...Se5
        • 2.e3#
      • 1...e5!
    • 1.Qxd6+?
      • 1...Sxd6
        • 2.e3#
      • 1...Bxd6+!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sf3#
        • 2.Sc6#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...Sxe5
        • 2.e3#
      • 1...dxe5
        • 2.Qc5#
      • 1...fxe5
        • 2.Qf4#
      • 1...Sd2
        • 2.Sc6#
      • 1...Sa5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::P(B)
    • S(b);N_GUARD,N_SPINP(f)::P(B)
    • P(d);OGATE::QAB1(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(c);S_FLIGHT::QAB1(G),XP(f)
        • S(b);N_GUARD,N_SPINP(f),SBLOCK::P(B)
      • Refutation
        • S(b);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(c);S_FLIGHT::QAB1(G),XP(f)
        • S(b);N_GUARD,N_SPINP(f),SBLOCK::P(B)
      • Refutation
        • S(b);
    • Try
      • B(H);CHECK,XP(f)
      • Vars
        • S(b);P_SPINS(b)::P(B)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • S(b);XQ(G)::P(B)
      • Refutation
        • B(g);CHECK,XQ(G)
  • Actual
    • S(F);N_PINP(f)
    • Threat
      • DUALS(2)
    • Vars
      • K(c);OGATEB,P_SPINP(f),S_FLIGHT,XS(F)::QAB1(G),XP(f)
      • S(b);N_GUARD,SBLOCK,XS(F)::P(B)
      • P(d);OGATE,XS(F)::QAB1(G)
      • P(f);OGATE,P_SPINP(f),XS(F)::QAR2(G)
      • S(b);::S(F)
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