MESON Chess Problem Database

Problem Display
PID: 234813 (7b/3K1p2/2Pp2pn/2rP4/1PrkPQ2/PBp5/NpPp1P2/1n1R4 w - - 0 1)

Cuppini, Alessandro

Het Belgisch Schaakbord (L'Echiquier Belge), 2002

7b/3K1p2/2Pp2pn/2rP4/1PrkPQ2/PBp5/NpPp1P2/1n1R4

#2

12 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.e5#
    • 1...Rxd5
      • 2.e5#
    • 1...Be5
      • 2.Qe3#
  • Tries
    • 1.Kxd6?
      • threat
        • 2.Qe3#
        • 2.e5#
      • 1...Rxd5+
        • 2.exd5#
      • 1...Be5+
        • 2.Qxe5#
      • 1...Sf5+
        • 2.exf5#
      • 1...Sg4
        • 2.e5#
      • 1...g5
        • 2.Qe3#
      • 1...Rxc6+!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Se2#
      • 1...Kxc3
        • 2.Qe3#
      • 1...Rxc3
        • 2.e5#
      • 1...Sxc3
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(e);XP(G)::QAR(I)+P(H)
    • R(g);SBLOCK,XP(J)::QAR(I)+P(H)
    • B(l);SBLOCK::QAB1(I)
  • Tries
    • Try
      • K(L);P-FLIGHT,XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);CHECK,OGATE,XP(J)::QAR(I)+P(H),XR(g)
        • B(l);CHECK,N_GUARD::QAB1(I),XB(l)
        • S(j);CHECK,OGATE::QAR(I)+P(H),XS(j)
        • S(j);::QAR(I)+P(H)
        • P(i);::QAB1(I)
      • Refutation
        • R(g);CHECK,XP(K)
  • Actual
    • S(B);XP(d)
    • Threat
      • S(B)
    • Vars
      • K(f);N_SPINP(c),S_FLIGHT,XS(B)::QAR2(I)
      • R(e);SBLOCK,XS(B)::QAR(I)+P(H)
      • S(a);N_GUARD,SBLOCK,XS(B)::R(A),XP(c)
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