MESON Chess Problem Database

Problem Display
PID: 4926 (5K2/6n1/2p2R2/1n2kP2/7Q/4N3/3P4/8 w - - 0 1)

Tolosa y Carreras, Jose

La Ilustracio Catalana, 1894

5K2/6n1/2p2R2/1n2kP2/7Q/4N3/3P4/8

#2

6 + 4

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.d4#
    • 1...Sc3
      • 2.d4#
    • 1...Sd6
      • 2.d4#
    • 1...Sa7
      • 2.d4#
    • 1...Sc7
      • 2.d4#
    • 1...Sh5
      • 2.Re6#
    • 1...Se6+
      • 2.Rxe6#
    • 1...Se8
      • 2.Re6#
  • Tries
    • 1.Kxg7?
      • threat
        • 2.Re6#
      • 1...Sc7
        • 2.d4#
      • 1...Sd4!
    • 1.Qe4+?
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kxe4!
    • 1.Qf4+?
      • 1...Kxf6
        • 2.Sg4#
      • 1...Kxf4!
  • Keys
    • 1.Rd6!
      • 1...Se6+
        • 2.Rxe6#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Sxd6
        • 2.d4#
      • 1...Sxf5
        • 2.Sc4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sa7
        • 2.Qd4#
      • 1...Sc7
        • 2.Qd4#
      • 1...Sh5
        • 2.Re6#
      • 1...Se8
        • 2.Re6#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(A)
    • S(d);N_GUARD::R1(E)
    • S(d);CHECK,N_GUARD::R1(E),XS(d)
  • Tries
    • Try
      • K(F);S_FLIGHT,XS(d)
      • Threat
        • R1(E)
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(E)::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(E)::S(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • R(E);
    • Vars
      • S(d);CHECK,N_GUARD::R1(E),XS(d)
      • K(b);S_FLIGHT,XR(E)::QAB1(C)
      • S(a);N_GUARD,SBLOCK,XR(E)::P(A)
      • S(d);SBLOCK,XP(D)::S(B)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
      • S(d);N_GUARD::R1(E)
      • P(c);N_GUARD::R1(E)
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