MESON Chess Problem Database

Problem Display
PID: 206254 (4r3/1p4q1/1Rnp2n1/2Nk4/r2pN1P1/1PP2Q2/2b5/4R1K1 w - - 0 1)

Foschini, Ettore

5th Prize, Il Problema, 1933

4r3/1p4q1/1Rnp2n1/2Nk4/r2pN1P1/1PP2Q2/2b5/4R1K1

#2

9 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf5#
    • 1...Sce5
      • 2.Rxd6#
  • Tries
    • 1.Qf7+?
      • 1...Ke5
        • 2.Sd7#
        • 2.Qf5#
      • 1...Re6
        • 2.Qxe6#
      • 1...Qxf7!
    • 1.c4+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Rxc4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sf6#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxe6
        • 2.Sc5#
      • 1...Rxe6
        • 2.Rb5#
      • 1...Bxb3
        • 2.Sd2#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Qe5
        • 2.Sc7#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Sce5
        • 2.Rxd6#
      • 1...Sge5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAR1(E)
    • S(e);OGATE,SBLOCK::R1(I),XP(f)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::QAB1(E),XR(j)
      • Refutation
        • Q(i);XQ(E)
    • Try
      • P(D);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(E)
      • Refutation
        • R(b);XP(D)
  • Actual
    • S(H);
    • Threat
      • QAB(E)+S(F),DCHECK
    • Vars
      • K(d);P-FLIGHT::QAR1(E)
      • K(d);S_FLIGHT,XS(H)::R(A)+S(F),DCHECK
      • R(j);SBLOCK,XS(H)::R(I)
      • B(a);N_GUARD,XP(C)::QAB(E)+S(F)
      • B(a);OGATE,P_SPINB(a),XS(F)::QAB1(E),XB(a)
      • Q(i);N_GUARD,SBLOCK::S(H)
      • Q(i);::QAB(E)+S(F),DCHECK,XQ(i)
      • S(e);OGATE,SBLOCK::R1(I),XP(f)
      • S(g);N_GUARD,P_PINP(G),SBLOCK::S(H)
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