MESON Chess Problem Database

Problem Display
PID: 265729 (1q2knKn/b1PpN1R1/4PP2/8/8/8/8/8 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Parcerisa-80 (Problemas), 2022

1q2knKn/b1PpN1R1/4PP2/8/8/8/8/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.c8Q#
      • 2.c8R#
    • 1...Qb2
      • 2.c8Q#
      • 2.c8R#
    • 1...Qb3
      • 2.c8Q#
      • 2.c8R#
    • 1...Qb4
      • 2.c8Q#
      • 2.c8R#
    • 1...Qb5
      • 2.c8Q#
      • 2.c8R#
    • 1...Bg1
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Bf2
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Be3
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Bd4
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Bc5
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Sf7
      • 2.exf7#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sd6#
        • 2.Re7#
      • 1...Qb4
        • 2.c8Q#
        • 2.c8R#
      • 1...Qb6
        • 2.Re7#
      • 1...Qd8
        • 2.Sd6#
      • 1...Bc5
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Sfg6
        • 2.Sd6#
        • 2.exd7#
      • 1...Shg6
        • 2.Sd6#
        • 2.f7#
      • 1...Sf7
        • 2.exf7#
      • 1...d6
        • 2.Sxd6#
        • 2.Re7#
      • 1...Qxc7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Re7#
      • 1...Qb4
        • 2.c8Q#
        • 2.c8R#
      • 1...Qd8
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Bc5
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Sfg6
        • 2.exd7#
      • 1...Shg6
        • 2.f7#
      • 1...Sf7
        • 2.exf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::P=Q
    • Q(c);N_GUARD,P_PINP(A)::P=Q
    • B(a);N_GUARD::PXQ(c)=Q
    • S(f);OGATE::P(A),XS(f)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_GUARD::P=Q
        • Q(c);::R1(E)
        • Q(c);::S(D)
        • B(a);N_GUARD::PXQ(c)=Q
        • S(f);OGATE::P(A),XS(f)
      • Refutation
        • Q(c);XP(C)
  • Actual
    • S(D);
    • Threat
      • R1(E)
    • Vars
      • Q(c);N_GUARD::P=Q
      • Q(c);OGATE::PXQ(c)=Q
      • B(a);N_GUARD::PXQ(c)=Q
      • S(e);N_GUARD::P(A),XP(b)
      • S(f);N_GUARD::P(B)
      • S(f);OGATE::P(A),XS(f)
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