MESON Chess Problem Database

Problem Display
PID: 29188 (2QRb3/8/2n4K/5N2/PnkPN3/b5R1/1q1P4/8 w - - 0 1)

Stocchi, Ottavio

2/4 HM., Skakbladet, 1938

2QRb3/8/2n4K/5N2/PnkPN3/b5R1/1q1P4/8

#2

9 + 6

3100 Selected Stocchi (I) 2001
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Rxc3#
    • 1...Qxd4
      • 2.Rxd4#
    • 1...Qb1
      • 2.Rc3#
    • 1...Qa2
      • 2.Rc3#
    • 1...Qxd2+
      • 2.Sxd2#
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb5#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Sxd4
        • 2.Sfd6#
      • 1...Sxd8
        • 2.Sed6#
      • 1...Qc3
        • 2.Rxc3#
      • 1...Sa2
        • 2.d3#
      • 1...Sc2
        • 2.d3#
      • 1...Sd3
        • 2.Se3#
      • 1...Sd5
        • 2.d3#
      • 1...Sa6
        • 2.d3#
      • 1...Sa5
        • 2.Sed6#
      • 1...Se5
        • 2.Sed6#
      • 1...Sa7
        • 2.Sed6#
      • 1...Se7
        • 2.Sed6#
      • 1...Sb8
        • 2.Sed6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::R1(B),XQ(a)
    • Q(a);OGATE,XP(D)::R1(I),XQ(a)
    • Q(a);N_GUARD::R1(B)
    • Q(a);CHECK,XP(A)::S(E),XQ(a)
  • Actual
    • Q(H);N_PINS(e)
    • Threat
      • QAB1(H)
    • Vars
      • Q(a);CHECK,XP(A)::S(E),XQ(a)
      • S(e);SBLOCK,XP(D)::S(F)
      • S(e);XR(I)::S(E)
      • Q(a);N_GUARD::R1(B),XQ(a)
      • S(c);N_GUARD::P(A)
      • S(c);SBLOCK::S(F)
      • S(e);::S(E)
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