MESON Chess Problem Database

Problem Display
PID: 202388 (1Nr1n2B/1r4R1/2pbN3/4kp2/1P1R4/8/4K3/8 w - - 0 1)

Somma, Francesco

L'Alfiere di Re, 1923

1Nr1n2B/1r4R1/2pbN3/4kp2/1P1R4/8/4K3/8

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Re7+?
      • 1...Sg7
        • 2.Bxg7#
      • 1...Sf6!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Re7#
      • 1...Kxd4
        • 2.Rg4#
      • 1...Kf6
        • 2.Sd7#
      • 1...Sxg7
        • 2.Bxg7#
      • 1...f4
        • 2.Rg5#
      • 1...Be7
        • 2.Rxe7#
      • 1...Sf6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::B(G),XS(g)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • S(D);
    • Threat
      • B(G)+R(E),DCHECK
    • Vars
      • K(a);S_FLIGHT,XR(C)::B(G)+R(E),DCHECK
      • K(a);S_FLIGHT::S(F)
      • S(g);OGATE,P_SPINS(g),XR(E)::B(G),XS(g)
      • P(b);::B(G)+R(E),DCHECK
      • B(d);::B(G)+R(E),DCHECK,XB(d)
      • S(g);SBLOCK::S(F),XP(c)
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