MESON Chess Problem Database

Problem Display
PID: 42369 (Q3N3/3Rp3/p3b2B/3pkp2/4P1P1/4Prnr/2KP1n1q/6N1 w - - 0 1)

Battaglia, Emilio

2nd HM., BCF 033. Ty., 1939-1940

Q3N3/3Rp3/p3b2B/3pkp2/4P1P1/4Prnr/2KP1n1q/6N1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd7
      • 2.Qxd5#
    • 1...Sfxe4
      • 2.Sxf3#
    • 1...Sgxe4
      • 2.d4#
    • 1...dxe4
      • 2.Bg7#
      • 2.Qb8#
    • 1...d4
      • 2.Sxf3#
      • 2.Bg7#
      • 2.exd4#
    • 1...fxe4
      • 2.Qb8#
  • Tries
    • 1.Rxd5+?
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Kxe4!
  • Keys
    • 1.Rxe7!
      • threat
        • 2.Qxd5#
      • 1...Kxe4
        • 2.Rxe6#
      • 1...Sfxe4
        • 2.Sxf3#
      • 1...Sgxe4
        • 2.d4#
      • 1...dxe4
        • 2.Bg7#
      • 1...fxe4
        • 2.Qb8#
      • 1...d4
        • 2.Sxf3#
        • 2.Bg7#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD,XR(H)::QAR1(I),XP(f)
    • S(a);P_PINP(C),SBLOCK,XP(E)::S(A),XR(c)
    • S(d);SBLOCK,XP(E)::P(C)
    • P(h);SBLOCK,XP(E)::QAB(I)
  • Tries
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • B(j);OGATE,XR(H)::QAR1(I),XB(j)
      • Refutation
        • K(g);P-FLIGHT,XP(E)
  • Actual
    • R(H);P_PINB(j),XP(k)
    • Threat
      • QAR1(I),XP(f)
    • Vars
      • K(g);P-FLIGHT,P_SPINP(f),XP(E)::R(H),XB(j)
      • S(a);P_PINP(C),SBLOCK,XP(E)::S(A),XR(c)
      • S(d);SBLOCK,XP(E)::P(C)
      • P(f);XP(E)::B(G)
      • P(h);SBLOCK,XP(E)::QAB(I)
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