MESON Chess Problem Database

Problem Display
PID: 67303 (1n3K2/2p2R2/2P1Q1p1/p3N2b/1B1k1p1r/2rP1p2/1npP4/4b1N1 w - - 0 1)

Stocchi, Ottavio

2nd Prize, British Chess Magazine, 1954

1n3K2/2p2R2/2P1Q1p1/p3N2b/1B1k1p1r/2rP1p2/1npP4/4b1N1

#2

9 + 13

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Rxf4#
    • 1...Rh2
      • 2.Rxf4#
    • 1...Rh3
      • 2.Rxf4#
    • 1...Rg4
      • 2.Sgxf3#
    • 1...Bg4
      • 2.Rxf4#
    • 1...Sa6
      • 2.Rd7#
    • 1...Sxc6
      • 2.Rd7#
    • 1...Sd7+
      • 2.Rxd7#
  • Tries
    • 1.Sexf3+?
      • 1...Kxd3
        • 2.Qd5#
        • 2.Qe2#
      • 1...Bxf3!
    • 1.Sg4?
      • threat
        • 2.Qe4#
      • 1...Sd7+
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Kxd3
        • 2.Qd5#
      • 1...Rxd3
        • 2.Rxf4#
      • 1...Sxd3
        • 2.Sxf3#
      • 1...axb4!
    • 1.Qd7+?
      • 1...Kxe5
        • 2.Bxc3#
      • 1...Sxd7+!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qe4#
      • 1...Sxd7+
        • 2.Rxd7#
      • 1...Kxd3
        • 2.Qd5#
      • 1...Rxd3
        • 2.Bc5#
      • 1...Sxd3
        • 2.Bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::R(H),XP(g)
    • R(h);S_CUTB(j)::S(A),XP(e)
    • B(j);S_CUTR(h)::R(H),XP(g)
    • S(m);N_GUARD::R(H)
    • S(m);N_GUARD,XP(F)::R(H)
    • S(m);CHECK,N_GUARD::R(H),XS(m)
  • Tries
    • Try
      • S(E);CHECK,XP(e)
      • Refutation
        • B(j);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • K(f);P-FLIGHT,XP(C)::QAR2(G)
        • R(d);SBLOCK,XP(C)::R(H),XP(g)
        • S(b);SBLOCK,XP(C)::S(A),XP(e)
      • Refutation
        • P(i);XB(D)
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XS(E)::B(D),XR(d)
      • Refutation
        • S(m);CHECK,XQ(G)
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • S(m);CHECK,OGATE,XS(E)::R(H),XS(m)
      • K(f);P-FLIGHT,XP(C)::QAR2(G)
      • R(d);N_GUARD,SBLOCK,XP(C)::B(D)
      • S(b);SBLOCK,XP(C)::B(D),XR(d)
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