MESON Chess Problem Database

Problem Display
PID: 132362 (2BR4/8/3N2p1/1P1kq2Q/1P1Pn3/4n3/K3N2b/3R4 w - - 0 1)

Parrinello, Mario

Scacchi e Scienze Applicate, 1992

2BR4/8/3N2p1/1P1kq2Q/1P1Pn3/4n3/K3N2b/3R4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sf4#
      • 2.Qxe5#
    • 1...Bf4
      • 2.Sxf4#
    • 1...Sf2
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
      • 2.Sf4#
      • 2.Qxe5#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sg5
      • 2.Sc3#
    • 1...Sf6
      • 2.Sc3#
  • Tries
    • 1.dxe5+?
      • 1...Sd2
        • 2.Rxd2#
      • 1...Sxd1!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sc3#
      • 1...Qxd4
        • 2.Qxe4#
      • 1...Qxd6
        • 2.Qf7#
      • 1...Sxd1
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::S(C),XB(a)
    • S(c);N_GUARD::S(C)
    • S(c);CHECK,N_GUARD::S(C),XS(c)
    • S(c);N_GUARD,N_SPINQ(e)::S(C)
  • Tries
    • Try
      • P(E);CHECK,XQ(e)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R(A),XS(c)
      • Refutation
        • S(b);XR(A)
  • Actual
    • Q(G);N_PINQ(e),P_PINS(c)
    • Threat
      • S(C)
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),XP(E)::QAB1(G),XS(c)
      • Q(e);N_GUARD,P_SPINQ(e),XS(H)::QAB(G)
      • S(b);OGATE,XR(A)::QAB(G)
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