MESON Chess Problem Database

Problem Display
PID: 152605 (b2Bq1r1/8/r1nR1Nn1/1p2P3/pp2pkPP/4p1p1/1N2Q1B1/K7 w - - 0 1)

Mariani, Stefano

L'Italia Scacchistica, 1985

b2Bq1r1/8/r1nR1Nn1/1p2P3/pp2pkPP/4p1p1/1N2Q1B1/K7

#2

10 + 13

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qf1#
    • 1...Scxe5
      • 2.Sh5#
    • 1...Sgxe5
      • 2.Sd5#
  • Tries
    • 1.Re6?
      • threat
        • 2.Sd5#
        • 2.Sh5#
        • 2.Qf1#
      • 1...Qxd8
        • 2.Sh5#
        • 2.Qf1#
      • 1...Scxe5
        • 2.Sh5#
      • 1...Sxd8
        • 2.Sh5#
        • 2.Qf1#
      • 1...Sxh4
        • 2.Sd5#
      • 1...Sgxe5
        • 2.Sd5#
      • 1...Qd7
        • 2.Sh5#
        • 2.Qf1#
      • 1...Rh8
        • 2.Sd5#
        • 2.Qf1#
      • 1...Sd4
        • 2.Sh5#
      • 1...Sa5
        • 2.Sh5#
        • 2.Qf1#
      • 1...Sa7
        • 2.Sh5#
        • 2.Qf1#
      • 1...Sce7
        • 2.Sh5#
        • 2.Qf1#
      • 1...Sb8
        • 2.Sh5#
        • 2.Qf1#
      • 1...Sge7
        • 2.Qf1#
      • 1...Sf8
        • 2.Sd5#
        • 2.Qf1#
      • 1...Sh8
        • 2.Sd5#
        • 2.Qf1#
      • 1...Qxe6!
    • 1.Qf3+?
      • 1...exf3
        • 2.Sd3#
      • 1...Kxe5!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sd3#
      • 1...Kxe5
        • 2.Sd3#
      • 1...Qxe5
        • 2.Qf3#
      • 1...Scxe5
        • 2.Bg5#
      • 1...Sgxe5
        • 2.Rf6#

Anticipated by 166678(1958-1960)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(l);P_PINS(B),SBLOCK,XP(G)::QAR(C)
    • S(i);SBLOCK,XP(G)::S(I)
    • S(j);SBLOCK,XP(G)::S(I)
  • Tries
    • Try
      • R(H);
      • Threat
        • DUALS(3)
      • Vars
        • S(i);XP(G)::S(I)
        • S(j);XP(F)::S(I)
        • S(j);XP(G)::S(I)
        • S(i);::S(I)
        • S(j);::QAR(C)
      • Refutation
        • Q(l);XR(H)
    • Try
      • Q(C);CHECK
      • Vars
        • P(e);XQ(C)::S(B)
      • Refutation
        • K(f);S_FLIGHT,XP(G)
  • Actual
    • S(I);XP(e)
    • Threat
      • S(B)
    • Vars
      • K(f);S_FLIGHT,XP(G)::S(B)
      • Q(l);P_PINS(B),SBLOCK,XP(G)::QAR1(C)
      • S(i);SBLOCK,XP(G)::B(J)
      • S(j);SBLOCK,XP(G)::R(H)
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Developed and maintained by Brian Stephenson.
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