MESON Chess Problem Database

Problem Display
PID: 72694 (8/5N2/1p2p3/1P1kP1K1/8/2R1rRQ1/1P6/6B1 w - - 0 1)

Foschini, Ettore

L'Italia Scacchistica, 1921

8/5N2/1p2p3/1P1kP1K1/8/2R1rRQ1/1P6/6B1

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Qxf3#
    • 1...Rxe5+
      • 2.Qxe5#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qc4#
      • 1...Rxe5+
        • 2.Qxe5#
      • 1...Rxc3
        • 2.Qd4#
      • 1...Re4!
  • Keys
    • 1.Qg2!
      • 1...Rxe5+
        • 2.Rf5#
      • 1...Kd4
        • 2.Rf4#
      • 1...Ke4
        • 2.Rf4#
      • 1...Rxc3
        • 2.Rxc3#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Re4
        • 2.Rfd3#
      • 1...Re1
        • 2.Rfd3#
      • 1...Re2
        • 2.Rfd3#
      • 1...Rd3
        • 2.Rfxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XR(D)::QAB(E),XR(a)
    • R(a);CHECK,OGATE,XP(G)::QAR1(E),XR(a)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • R(a);CHECK,OGATE,XP(G)::QAR1(E),XR(a)
        • R(a);XR(C)::QAR1(E)
      • Refutation
        • R(a);
  • Actual
    • Q(E);
    • Vars
      • R(a);CHECK,N_GUARD,XP(G)::QAB(E)+R(D)
      • K(b);P-FLIGHT,P_SPINR(a)::R(D)
      • K(b);S_FLIGHT::QAB(E)+R(D),DCHECK
      • R(a);OGATE,XR(C)::QAB(E)+R(D),XR(a)
      • R(a);OGATE,P_SPINR(a),XR(D)::QAB(E),XR(a)
      • R(a);OGATE::R(D)
      • R(a);OGATE::QAB(E)+R(D),DCHECK
      • R(a);OGATE::QAB(E)+R(D),DCHECK,XR(a)
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