MESON Chess Problem Database

Problem Display
PID: 64253 (2B5/K3p3/2pR2pq/2p1k2r/2P1n2b/3QR1P1/3N3B/7b w - - 0 1)

Stocchi, Ottavio

3rd HM., Magasinet, 1952/I

2B5/K3p3/2pR2pq/2p1k2r/2P1n2b/3QR1P1/3N3B/7b

#2

9 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.gxf4#
    • 1...Qg7
      • 2.gxh4#
    • 1...Qh7
      • 2.gxh4#
    • 1...Qh8
      • 2.gxh4#
    • 1...Rf5
      • 2.Re6#
    • 1...Bf3
      • 2.Sxf3#
    • 1...g5
      • 2.gxh4#
    • 1...exd6
      • 2.Qc3#
  • Tries
    • 1.g4+?
      • 1...Qf4
        • 2.Re6#
      • 1...Bg3!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Re6#
      • 1...Bxf3
        • 2.Sxf3#
      • 1...Sxd6
        • 2.Qc3#
      • 1...exd6
        • 2.Qxe4#
      • 1...Qf4
        • 2.gxf4#
      • 1...Sg5
        • 2.gxh4#
      • 1...g5
        • 2.Rf5#
      • 1...e6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(i);OGATE::P(E),XQ(i)
    • Q(i);N_GUARD::B(B)+P(E),XB(c)
    • R(f);SBLOCK::R1(G)
    • B(a);N_GUARD::S(A),XB(a)
    • P(h);S_CUTQ(i)::B(B)+P(E),XB(c)
    • P(j);SBLOCK,XR(G)::QAB(C)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • Q(i);P_SPINQ(i)::R1(G)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • R(D);N_PINS(b)
    • Threat
      • R1(G)
    • Vars
      • B(a);XR(D)::S(A),XB(a)
      • S(b);N_GUARD,SBLOCK,XR(G)::QAB(C)
      • P(j);SBLOCK,XR(G)::QAR1(C),XS(b)
      • Q(i);OGATE::P(E),XQ(i)
      • S(b);N_GUARD,S_CUTQ(i)::B(B)+P(E),XB(c)
      • P(h);N_GUARD,S_CUTR(f)::R1(D)
      • P(j);::R1(G),XP(j)
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