MESON Chess Problem Database

Problem Display
PID: 229001 (n3br2/1Q1Bp3/2KB4/1PR1p2p/4k1P1/3pPp2/2rn1P2/b7 w - - 0 1)

Somma, Francesco

L'Alfiere di Re, 1926

n3br2/1Q1Bp3/2KB4/1PR1p2p/4k1P1/3pPp2/2rn1P2/b7

#2

9 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Rxe5#
    • 1...Rxc5+
      • 2.Kxc5#
    • 1...Bxd7+
      • 2.Kxd7#
    • 1...Bf7
      • 2.Bf5#
    • 1...Sb6
      • 2.Kxb6#
    • 1...Sc7
      • 2.Kxc7#
    • 1...exd6
      • 2.Kxd6#
  • Tries
    • 1.Bxe8?
      • threat
        • 2.Kd7#
      • 1...Rxc5+
        • 2.Kxc5#
      • 1...exd6
        • 2.Kxd6#
      • 1...Sb6
        • 2.Kxb6#
      • 1...Sc7
        • 2.Kxc7#
      • 1...hxg4!
  • Keys
    • 1.b6!
      • threat
        • 2.Kb5#
      • 1...Rxc5+
        • 2.Kxc5#
      • 1...Bxd7+
        • 2.Kxd7#
      • 1...Sxb6
        • 2.Kxb6#
      • 1...exd6
        • 2.Kxd6#
      • 1...Rb2
        • 2.Rxe5#
      • 1...Bf7
        • 2.Bf5#
      • 1...Sc7
        • 2.Kxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(b);N_PINR(E)::R1(E),XP(g)
    • R(b);CHECK,XR(E)::QAB(H)+K(F),XR(b)
    • B(k);CHECK,XB(I)::QAB(H)+K(F),XB(k)
    • B(k);N_PINB(I)::B(I)
    • S(j);::QAB(H)+K(F),XS(j)
    • P(i);XB(G)::QAB(H)+K(F),XP(i)
  • Tries
    • Try
      • B(I);N_SPINB(I),XB(k)
      • Threat
        • QAB(H)+K(F)
      • Vars
        • R(b);CHECK,XR(E)::QAB(H)+K(F),XR(b)
        • P(i);XB(G)::QAB(H)+K(F),XP(i)
        • S(j);::QAB(H)+K(F),XS(j)
      • Refutation
        • P(h);XP(C)
  • Actual
    • P(D);
    • Threat
      • QAB(H)+K(F)
    • Vars
      • R(b);CHECK,XR(E)::QAB(H)+K(F),XR(b)
      • B(k);CHECK,XB(I)::QAB(H)+K(F),XB(k)
      • S(j);XP(D)::QAB(H)+K(F),XS(j)
      • P(i);XB(G)::QAB(H)+K(F),XP(i)
      • R(b);N_PINR(E)::R1(E),XP(g)
      • B(k);N_PINB(I)::B(I)
      • S(j);::QAB(H)+K(F),XS(j)
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Developed and maintained by Brian Stephenson.
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