MESON Chess Problem Database

Problem Display
PID: 205782 (8/2R2n2/5K2/3kpp2/8/1p2P3/2PN1P2/1Q6 w - - 0 1)

Aprile, Giuseppe

L'Alfiere di Re, 1925

8/2R2n2/5K2/3kpp2/8/1p2P3/2PN1P2/1Q6

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1+?
      • 1...Kd6
        • 2.Qc6#
      • 1...e4!
  • Keys
    • 1.Se4!
      • threat
        • 2.c4#
      • 1...Kxe4
        • 2.Qh1#
      • 1...bxc2
        • 2.Qb7#
      • 1...fxe4
        • 2.Qd1#
      • 1...Sd6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(C);
    • Threat
      • P(B)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(C)::QAB(A)
      • P(a);OGATE,XP(B)::QAB(A)
      • P(d);SBLOCK,XS(C)::QAR(A)
      • S(e);SBLOCK::S(C)
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