MESON Chess Problem Database

Problem Display
PID: 157151 (2b2q2/1pPBkp1N/1P1ppN2/3Rp1R1/QK6/6B1/8/8 w - - 0 1)

Cristoffanini, Guido

Il Secolo, 1925

2b2q2/1pPBkp1N/1P1ppN2/3Rp1R1/QK6/6B1/8/8

#2

10 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Sg8#
    • 1...Qg8
      • 2.Sxg8#
    • 1...Bxd7
      • 2.Qxd7#
    • 1...e4
      • 2.Bxd6#
    • 1...exd5
      • 2.Sxd5#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Bxd6#
      • 1...exd5
        • 2.Sxd5#
      • 1...dxe5!
    • 1.Qc6?
      • threat
        • 2.Qxd6#
      • 1...exd5
        • 2.Sxd5#
      • 1...bxc6!
  • Keys
    • 1.Rg8!
      • 1...Qxg8
        • 2.Sxg8#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...exd5
        • 2.Sxd5#
      • 1...Qg7
        • 2.Re8#
      • 1...Qh6
        • 2.Re8#
      • 1...Qd8
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Qe8
        • 2.Rxe8#
      • 1...e4
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_GUARD::S(G)
    • Q(h);N_GUARD::S(G),XQ(h)
    • B(g);OGATE,XB(I)::QAR1(B),XB(g)
    • P(a);OGATE::B(A),XP(b)
    • P(c);XR(D)::S(G),XP(c)
  • Tries
    • Try
      • B(A);XP(a)
      • Threat
        • B(A),XP(b)
      • Vars
        • P(c);XR(D)::S(G),XP(c)
      • Refutation
        • P(b);XB(A)
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(b)
      • Vars
        • P(c);XR(D)::S(G),XP(c)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • R(E);
    • Vars
      • Q(h);XR(E)::S(G),XQ(h)
      • B(g);OGATE,XB(I)::QAR1(B),XB(g)
      • P(c);XR(D)::S(G),XP(c)
      • Q(h);OGATE::R1(E)
      • Q(h);OGATE::PXQ(h)=Q
      • Q(h);OGATE::R1(E),XQ(h)
      • P(a);OGATE::B(A),XP(b)
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