MESON Chess Problem Database

Problem Display
PID: 228973 (5n2/1Q5B/1nrp2R1/3k1b2/1p1p4/N1P1pN2/4P3/2K5 w - - 0 1)

Mari, Alberto

L'Italia Scacchistica, 1926

5n2/1Q5B/1nrp2R1/3k1b2/1p1p4/N1P1pN2/4P3/2K5

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd6+?
      • 1...Ke4
        • 2.Rxd4#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kxd6!
  • Keys
    • 1.Qf7+!
      • 1...Ke4
        • 2.Rg4#
      • 1...Kc5
        • 2.cxd4#
      • 1...Be6
        • 2.Rg5#
      • 1...Se6
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,XP(h)
      • Vars
        • K(d);OGATE,P_SPINB(e),S_FLIGHT::R1(F),XP(c)
        • K(d);N_PINP(D),N_SPINR(g),P-FLIGHT::QAR1(G),XR(g)
      • Refutation
        • K(d);N_SPINR(g),P-FLIGHT,XR(F)
  • Actual
    • Q(G);CHECK,N_PINR(g)
    • Vars
      • K(d);S_FLIGHT::R(F)
      • K(d);N_PINP(D),P-FLIGHT::P(D),XP(c)
      • B(e);P_SPINB(e),S_CUTS(i)::R(F)
      • S(i);P_SPINS(i)::QAR2(G),XB(e)
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