MESON Chess Problem Database

Problem Display
PID: 263586 (3n4/3Q3K/n2P4/2Pk1N1R/3pqp2/1P1N1p2/8/4R3 w - - 0 1)

Foschini, Ettore

Il Problema, 1932

3n4/3Q3K/n2P4/2Pk1N1R/3pqp2/1P1N1p2/8/4R3

#2

9 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Rxf5#
    • 1...Qe5
      • 2.Se7#
      • 2.Rxe5#
    • 1...Qe6
      • 2.Se7#
    • 1...Qe7+
      • 2.Sxe7#
      • 2.dxe7#
    • 1...Qe8
      • 2.Se7#
    • 1...Sc7
      • 2.dxc7#
    • 1...Se6
      • 2.Qb7#
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Sg3#
        • 2.Rxd4#
        • 2.Re5#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Re5#
        • 2.Qb7#
      • 1...Sf7
        • 2.Rxd4#
        • 2.Qb7#
      • 1...Kxe4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxe4#
      • 1...Qxf5+
        • 2.Rxf5#
      • 1...Qe7+
        • 2.Sxe7#
      • 1...Qxd3
        • 2.Re5#
      • 1...Qxe1
        • 2.Se3#
      • 1...Qxe8
        • 2.Se7#
      • 1...Sxc5
        • 2.Sb4#
      • 1...Qe2
        • 2.Se3#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Qe6
        • 2.Se7#
      • 1...Se6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(F),XQ(c)
    • Q(c);N_PINS(E)::R(F)+S(E),DCHECK
    • S(f);OGATE::QAR(H)+P(G),XS(f)
    • S(g);N_GUARD,SBLOCK::QAB(H)
  • Tries
    • Try
      • R(A);N_SPINS(E),XQ(c)
      • Threat
        • DUALS(3)
      • Vars
        • S(g);N_GUARD,SBLOCK::QAB1(H)
      • Refutation
        • K(e);S_FLIGHT,XR(A)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XQ(c)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(E)::R(F),XQ(c)
      • Q(c);CHECK,N_PINS(E)::R(F)+S(E),DCHECK,XQ(c)
      • Q(c);OGATE,XS(C)::R1(A)
      • Q(c);N_PINS(E),XR(A)::R(F)+S(E),DCHECK
      • Q(c);N_PINS(E),XQ(H)::R(F)+S(E),DCHECK
      • S(f);N_GUARD,SBLOCK,XP(D)::S(C)
      • Q(c);N_PINS(E)::R(F)+S(E),DCHECK
      • Q(c);N_PINS(E)::R(F)+S(E),DCHECK,XQ(c)
      • Q(c);N_PINS(E),OGATE::R1(A),XQ(c)
      • S(g);OGATE,SBLOCK::QAB(H)
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