MESON Chess Problem Database

Problem Display
PID: 109911 (2n2Q2/8/4Pn2/2B1k3/4PN1K/3P4/8/8 w - - 0 1)

Schead, Demetrio

Diario de Noticias, 1930

2n2Q2/8/4Pn2/2B1k3/4PN1K/3P4/8/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qxf6#
    • 1...Sxe4
      • 2.d4#
    • 1...Sg4
      • 2.Qf5#
    • 1...Sd5
      • 2.Qf5#
    • 1...Sh5
      • 2.Qf5#
    • 1...Sd7
      • 2.Qf5#
    • 1...Sh7
      • 2.Qf5#
    • 1...Se8
      • 2.Qf5#
    • 1...Sg8
      • 2.Qf5#
    • 1...Sb6
      • 2.Qd6#
      • 2.Qb8#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
      • 2.Qb8#
    • 1...Se7
      • 2.Qb8#
  • Tries
    • 1.Bd4+?
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Kxd4!
    • 1.Qf7?
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Sxe4
        • 2.d4#
      • 1...Se7!
    • 1.Qh8?
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Sb6
        • 2.Qb8#
      • 1...Sa7
        • 2.Qb8#
      • 1...Se7
        • 2.Qb8#
      • 1...Sd6!
    • 1.e7?
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Sxe4
        • 2.d4#
      • 1...Sxe7
        • 2.Qb8#
      • 1...Sg4
        • 2.Qf5#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Sd7
        • 2.Qf5#
      • 1...Sh7
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Sg8
        • 2.Qf5#
      • 1...Sb6
        • 2.Qb8#
      • 1...Sa7
        • 2.Qb8#
      • 1...Sd6!
  • Keys
    • 1.Kh3!
      • 1...Kxf4
        • 2.Qxf6#
      • 1...Sxe4
        • 2.d4#
      • 1...Sg4
        • 2.Qf5#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Sd7
        • 2.Qf5#
      • 1...Sh7
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Sg8
        • 2.Qf5#
      • 1...Sb6
        • 2.Qd6#
        • 2.Qb8#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
        • 2.Qb8#
      • 1...Se7
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
    • S(b);SBLOCK,XP(B)::P(A)
    • S(b);OGATE::QAR1(G)
    • S(c);N_GUARD::QAB1(G),XS(c)
    • S(c);OGATE::QAB(G)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XB(E)
    • Try
      • Q(G);
      • Threat
        • S(C)
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
        • S(b);SBLOCK,XP(B)::P(A)
      • Refutation
        • S(c);
    • Try
      • Q(G);P_PINS(b)
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
        • S(c);OGATE::QAB(G)
      • Refutation
        • S(c);
    • Try
      • P(F);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
        • S(b);SBLOCK,XP(B)::P(A)
        • S(c);OGATE,XP(F)::QAB(G)
        • S(b);OGATE::QAR1(G)
        • S(c);OGATE::QAB(G)
      • Refutation
        • S(c);
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT,XS(C)::QAR2(G),XS(b)
      • S(b);SBLOCK,XP(B)::P(A)
      • S(b);OGATE::QAR1(G)
      • S(c);N_GUARD::QAB1(G),XS(c)
      • S(c);OGATE::QAB(G)
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