MESON Chess Problem Database

Problem Display
PID: 139620 (3N4/4p1N1/4Pk1K/7p/b2R1Pp1/2R3r1/6nr/B4nq1 w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 2002

3N4/4p1N1/4Pk1K/7p/b2R1Pp1/2R3r1/6nr/B4nq1

#2

8 + 10

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sxh5+?
      • 1...Kf5
        • 2.Rc5#
      • 1...Rxh5+!
    • 1.Se8+?
      • 1...Kf5
        • 2.Rc5#
      • 1...Bxe8!
    • 1.Rd5?
      • threat
        • 2.Re3#
        • 2.Rf5#
      • 1...Rxc3
        • 2.Rf5#
      • 1...Sxf4
        • 2.Rf5#
      • 1...Qf2
        • 2.Rf5#
      • 1...Qe3
        • 2.Rxe3#
        • 2.Rf5#
      • 1...Qd4
        • 2.Rf5#
      • 1...Qb6
        • 2.Rf5#
      • 1...Qa7
        • 2.Rf5#
      • 1...Rd3
        • 2.Rf5#
      • 1...Re3
        • 2.Rxe3#
        • 2.Rf5#
      • 1...Bc2
        • 2.Se8#
        • 2.Re3#
      • 1...Sd2
        • 2.Rf5#
      • 1...Sfe3
        • 2.Rc1#
      • 1...Se1
        • 2.Rf5#
      • 1...Sge3
        • 2.Rc2#
      • 1...Sh4
        • 2.Sxh5#
      • 1...Qc5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rf5#
      • 1...Bc2
        • 2.Se8#
      • 1...Sfe3
        • 2.Rd1#
      • 1...Sge3
        • 2.Rd2#
      • 1...Sh4
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK,P_SPINS(G),XP(h)
      • Vars
        • K(i);P-FLIGHT::R(B)
      • Refutation
        • R(d);CHECK,XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(i);P-FLIGHT::R(B)
      • Refutation
        • B(f);XS(G)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);P_SPINR(e),XR(B)::R1(C)
        • S(c);XP(D)::R1(C)
        • Q(b);::R1(C)
        • R(e);::R1(C)
        • S(a);::R1(C)
        • S(a);S_CUTQ(b),S_CUTR(e)::B(A)+R(B)
        • S(c);::R1(C)
        • S(c);S_CUTQ(b),S_CUTR(e)::B(A)+R(B)
        • S(c);S_CUTR(d)::S(G),XP(h)
      • Refutation
        • Q(b);
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • B(f);N_GUARD::S(G)
      • S(a);S_CUTQ(b),S_CUTR(e)::B(A)+R(C)
      • S(c);S_CUTQ(b),S_CUTR(e)::B(A)+R(C)
      • S(c);S_CUTR(d)::S(G),XP(h)
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