MESON Chess Problem Database

Problem Display
PID: 206351 (2R5/1p3p2/1P1p1B2/3k4/KPN3P1/6P1/4P3/3N4 w - - 0 1)

van Geen, August

L'Alfiere di Re, 1925

2R5/1p3p2/1P1p1B2/3k4/KPN3P1/6P1/4P3/3N4

#2

10 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
  • Tries
    • 1.Ka3?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Kb3?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Ka5?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Kb5?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Sde3+?
      • 1...Ke4
        • 2.Re8#
      • 1...Ke6!
    • 1.Sce3+?
      • 1...Ke4
        • 2.Rc4#
        • 2.Re8#
      • 1...Ke6!
    • 1.Rc7?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Re8?
      • 1...Kxc4
        • 2.Se3#
      • 1...Kc6!
    • 1.b5?
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
  • Keys
    • 1.Rd8!
      • 1...Kxc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.Rxd6#
      • 1...Ke6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R(J)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(J);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(J);
      • Vars
        • K(a);S_FLIGHT,XS(F)::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(J);P_PINP(b)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT,XS(F)::S(A)
      • K(a);N_SPINP(b),S_FLIGHT::S(A)
      • K(a);N_SPINP(b),S_FLIGHT::R1(J),XP(b)
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