MESON Chess Problem Database

Problem Display
PID: 194077 (1nQ1K1N1/4P3/p1P3N1/r4pkP/8/Rp4p1/b5P1/3B1R2 w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1917

1nQ1K1N1/4P3/p1P3N1/r4pkP/8/Rp4p1/b5P1/3B1R2

#2

11 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa3
      • 2.Rxf5#
      • 2.Qxf5#
    • 1...Ra4
      • 2.Rxf5#
      • 2.Qxf5#
    • 1...b2
      • 2.Rxg3#
    • 1...f4
      • 2.Rxa5#
      • 2.Qg4#
  • Tries
    • 1.Rxb3?
      • threat
        • 2.Rxg3#
      • 1...Ra3
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...Ra4
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...f4
        • 2.Qg4#
      • 1...Bxb3!
    • 1.Rxa5?
      • threat
        • 2.Rfxf5#
        • 2.Raxf5#
        • 2.Qxf5#
      • 1...Sd7
        • 2.Rfxf5#
        • 2.Raxf5#
      • 1...Bb1!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rxg3#
      • 1...Kg4
        • 2.Rxf5#
      • 1...Kxh5
        • 2.Rxg3#
      • 1...Ra4
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...f4
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE::R(D),XP(c)
  • Tries
    • Try
      • R(D);XP(b)
      • Threat
        • R(D),XP(c)
      • Vars
        • P(e);OGATE::QAR1(I)
      • Refutation
        • B(a);XR(D)
    • Try
      • R(D);P_PINP(e),XR(d)
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);
  • Actual
    • R(B);
    • Threat
      • R(B),XP(c)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(e)::B(A)+R(B),XP(e)
      • K(f);P-FLIGHT,XP(E)::B(A)+R(B),XP(c)
      • P(e);OGATEB::R(D),XR(d)
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