MESON Chess Problem Database

Problem Display
PID: 244595 (4N1K1/qp2R3/n1p2p2/2nkN1b1/3Pp3/1P4Q1/3R4/5r2 w - - 0 1)

Fasano, Alessandro

3rd Prize, ASIGC, 2002-2003

4N1K1/qp2R3/n1p2p2/2nkN1b1/3Pp3/1P4Q1/3R4/5r2

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb3
      • 2.Qxb3#
    • 1...Se6
      • 2.Rd7#
    • 1...fxe5
      • 2.Rxe5#
      • 2.Qxe5#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qd6#
      • 1...Qb8
        • 2.Sb6#
      • 1...Rf4
        • 2.Se3#
      • 1...Bf4
        • 2.Sxf6#
      • 1...Sxb3!
    • 1.Sg4?
      • threat
        • 2.Qd6#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...Rf4
        • 2.Se3#
      • 1...Bf4
        • 2.Sgxf6#
      • 1...Qb8!
    • 1.Rd7+?
      • 1...Ke6
        • 2.Sg7#
      • 1...Sxd7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qd6#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...Qb8
        • 2.Sb6#
      • 1...Rf4
        • 2.dxc5#
      • 1...Bf4
        • 2.Sdxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(c);OGATE,XP(B)::QAB(C),XS(c)
    • S(c);N_GUARD,SBLOCK::R(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • Q(i);N_GUARD,P_PINS(G)::S(E)
        • R(a);S_CUTB(e)::S(E)
        • B(e);N_GUARD,S_CUTR(a)::S(G),XP(h)
      • Refutation
        • S(c);XP(B)
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • S(c);OGATE,XP(B)::QAB(C),XS(c)
        • R(a);S_CUTB(e)::S(E)
        • B(e);N_GUARD,S_CUTR(a)::S(E),XP(h)
      • Refutation
        • Q(i);P_PINS(G)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);S_FLIGHT::S(G)
      • Refutation
        • S(c);XR(F)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • S(c);OGATE,XP(B)::QAB(C),XS(c)
      • Q(i);N_GUARD,P_PINS(G)::S(E)
      • R(a);S_CUTB(e)::R(A)+P(D),XS(c)
      • B(e);N_GUARD,S_CUTR(a)::S(E),XP(h)
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