MESON Chess Problem Database

Problem Display
PID: 214534 (4R3/3pn3/5p1Q/3pk3/3N4/2KP4/2P4P/8 w - - 0 1)

Valle, Giovanni Batista

Detroit Free Press, 1877

4R3/3pn3/5p1Q/3pk3/3N4/2KP4/2P4P/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Sf3#
      • 2.Rxe7#
    • 1...d6
      • 2.Rxe7#
      • 2.Qe3#
  • Tries
    • 1.Kd2?
      • 1...Kxd4
        • 2.Qe3#
      • 1...f5
        • 2.Sf3#
      • 1...d6
        • 2.Qe3#
      • 1...Kd6!
    • 1.Qg7?
      • threat
        • 2.Qg3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6!
    • 1.h3?
      • 1...f5
        • 2.Sf3#
        • 2.Rxe7#
      • 1...d6
        • 2.Rxe7#
        • 2.Qe3#
      • 1...Kd6!
    • 1.h4?
      • 1...f5
        • 2.Sf3#
        • 2.Rxe7#
      • 1...d6
        • 2.Rxe7#
        • 2.Qe3#
      • 1...Kd6!
  • Keys
    • 1.Kb4!
      • 1...Kxd4
        • 2.Qf4#
      • 1...Kd6
        • 2.Qf4#
      • 1...f5
        • 2.Sf3#
      • 1...d6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT,XS(E)::QAB1(F)
        • P(c);SBLOCK::S(E)
        • P(d);SBLOCK::QAR2(F)
      • Refutation
        • K(b);N_SPINS(e),P_SPINP(c),S_FLIGHT
    • Try
      • Q(F);P_PINP(c)
      • Threat
        • QAB(F)
      • Vars
        • K(b);N_SPINP(c),N_SPINS(e),S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);N_SPINP(c),N_SPINS(e),S_FLIGHT
    • Try
      • P(B);
      • Refutation
        • K(b);N_SPINS(e),P_SPINP(c),S_FLIGHT
    • Try
      • P(B);
      • Refutation
        • K(b);N_SPINS(e),P_SPINP(c),S_FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • K(b);N_SPINS(e),S_FLIGHT,XS(E)::QAR2(F)
      • K(b);N_SPINS(e),P_SPINP(c),S_FLIGHT::QAB(F)
      • P(c);SBLOCK::S(E)
      • P(d);SBLOCK::QAR2(F)
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