MESON Chess Problem Database

Problem Display
PID: 5099 (7Q/8/n7/4R3/PNBkp3/2p5/P1p5/2K5 w - - 0 1)

Tolosa y Carreras, Jose

Ruy Lopez, 1899

7Q/8/n7/4R3/PNBkp3/2p5/P1p5/2K5

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Rd5+?
      • 1...Kxc4
        • 2.Qd4#
      • 1...Ke3!
    • 1.Rf5+?
      • 1...Ke3
        • 2.Sxc2#
        • 2.Sd5#
        • 2.Qxc3#
      • 1...Kxc4!
  • Keys
    • 1.Qf8!
      • 1...Ke3
        • 2.Sxc2#
      • 1...Kxc4
        • 2.Rxe4#
      • 1...Kxe5
        • 2.Sc6#
      • 1...Sxb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...e3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(E)::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • K(c);P-FLIGHT,XB(E)
  • Actual
    • Q(G);
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT::S(D),XP(a)
      • K(c);P-FLIGHT,XB(E)::R(F),XP(d)
      • K(c);S_FLIGHT,XR(F)::S(D)
      • S(e);N_GUARD,XS(D)::QAB1(G)
      • S(e);N_GUARD::QAB1(G),XS(e)
      • S(e);N_GUARD::QAB1(G)
      • P(d);OGATEB::QAR2(G)
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