MESON Chess Problem Database

Problem Display
PID: 97178 (1B2Rn2/6p1/pQ3Pp1/r4kN1/p4r1p/7P/8/4b1RK w - - 0 1)

Ceriani, Luigi

Il Problema, 1932

1B2Rn2/6p1/pQ3Pp1/r4kN1/p4r1p/7P/8/4b1RK

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxe5#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sd7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Rxf8?
      • threat
        • 2.Qe6#
        • 2.fxg7#
      • 1...gxf6
        • 2.Rxf6#
        • 2.Qe6#
        • 2.Qxf6#
      • 1...Bg3
        • 2.Qxa5#
      • 1...Re4
        • 2.fxg7#
      • 1...Re5
        • 2.fxg7#
      • 1...Bc3
        • 2.Qe6#
      • 1...Bb4
        • 2.Qe6#
      • 1...Rg4!
    • 1.Qxa5+?
      • 1...Kxf6
        • 2.Qe5#
      • 1...Bxa5!
    • 1.Qc5+?
      • 1...Kxf6
        • 2.Rxf8#
        • 2.Qxf8#
      • 1...Rxc5!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Rg5#
      • 1...Sxh7
        • 2.Qe6#
      • 1...gxf6
        • 2.Qxf6#
      • 1...Re5
        • 2.Rxe5#
      • 1...Se6
        • 2.Qxe6#
      • 1...g5
        • 2.Rxg5#
      • 1...Rf1
        • 2.Qb1#
      • 1...Rg4
        • 2.hxg4#
      • 1...Bg3
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD::R1(H),XR(e)
    • S(j);N_GUARD::QAB1(E),XS(j)
    • S(j);N_GUARD::QAB1(E)
  • Tries
    • Try
      • R(H);XS(j)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAR(E),XR(e)
        • R(c);::R(H)+P(F),XP(i)
        • R(e);::R(H)+P(F),XP(i)
        • B(a);::QAB1(E)
      • Refutation
        • R(c);
    • Try
      • Q(E);CHECK,XR(e)
      • Vars
        • K(f);P-FLIGHT,XP(F)::QAB1(E)
      • Refutation
        • B(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • R(e);XQ(E)
  • Actual
    • S(D);
    • Threat
      • R1(A)
    • Vars
      • S(j);N_GUARD,XS(D)::QAB1(E)
      • P(i);OGATE,XP(F)::QAR1(E),XP(i)
      • R(e);N_GUARD::R1(H),XR(e)
      • S(j);N_GUARD::QAB1(E),XS(j)
      • P(h);::R1(A),XP(h)
      • R(c);N_GUARD,P_PINR(A)::QAB(E)
      • R(c);OGATE::P(C),XR(c)
      • B(a);N_GUARD::QAR(E),XR(e)
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