MESON Chess Problem Database

Problem Display
PID: 202281 (8/6B1/p2p2K1/P2k4/N2p1R2/1R1Np3/2P1B3/8 w - - 0 1)

Aprile, Giuseppe

L'Alfiere di Re, 1923

8/6B1/p2p2K1/P2k4/N2p1R2/1R1Np3/2P1B3/8

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb4#
      • 2.Sb6#
      • 2.Rxd4#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Sb4#
      • 1...Kc4
        • 2.Sb4#
        • 2.Sb6#
        • 2.Rxd4#
      • 1...Kc6!
    • 1.Kf6?
      • threat
        • 2.Sb4#
      • 1...Kc4
        • 2.Sb4#
        • 2.Sb6#
      • 1...Kc6!
    • 1.Kf7?
      • threat
        • 2.Sb4#
      • 1...Kc4
        • 2.Sb4#
        • 2.Sb6#
        • 2.Rxd4#
      • 1...Kc6!
    • 1.Sb6+?
      • 1...Ke6
        • 2.Re4#
      • 1...Kc6!
    • 1.Bf3+?
      • 1...Kc4
        • 2.Sdb2#
        • 2.Sab2#
        • 2.Sb6#
        • 2.Rb4#
        • 2.Rxd4#
      • 1...Ke6!
    • 1.Rb6?
      • 1...Kc4
        • 2.Sb4#
        • 2.Rxd4#
      • 1...Ke6!
    • 1.Rf6?
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Bf3#
      • 1...Kc6!
  • Keys
    • 1.Rf7!
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Bf3#
      • 1...Kc6
        • 2.Sb4#
      • 1...Ke6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • S(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(H);P-FLIGHT
      • Threat
        • S(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(H);S_FLIGHT
      • Threat
        • S(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::S(E)
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
  • Actual
    • R(F);
    • Vars
      • K(c);S_FLIGHT::S(E)
      • K(c);S_FLIGHT::B(B)
      • K(c);S_FLIGHT::S(D)
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