MESON Chess Problem Database

Problem Display
PID: 43391 (2B5/K7/6p1/4pNbb/2Q1Pkp1/3P4/3PqP2/5RN1 w - - 0 1)

Stocchi, Ottavio

1st Prize, Probleemblad 081. TT, 1950

2B5/K7/6p1/4pNbb/2Q1Pkp1/3P4/3PqP2/5RN1

#2

10 + 7

5407 Selected Stocchi (II) 2004
56 The Problemist 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2+
      • 2.Rxf2#
    • 1...Qe3+
      • 2.dxe3#
      • 2.fxe3#
    • 1...Qxe4
      • 2.Qxe4#
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sgxe2#
        • 2.Sdxe2#
        • 2.Se6#
      • 1...Qxf1
        • 2.Se6#
      • 1...Qxd3
        • 2.Se6#
      • 1...Qxd2
        • 2.Se6#
      • 1...Qxf2
        • 2.Se2#
      • 1...Qxe4
        • 2.Sde2#
      • 1...exd4
        • 2.Qc7#
      • 1...Bh4
        • 2.Se6#
      • 1...Bf6
        • 2.Se6#
      • 1...Bh6
        • 2.Se6#
      • 1...Be7
        • 2.Se6#
      • 1...Bd8
        • 2.Se6#
      • 1...Qd1
        • 2.Se6#
      • 1...Qf3
        • 2.Se6#
      • 1...Qe1
        • 2.Se6#
      • 1...Qe3
        • 2.dxe3#
      • 1...g3
        • 2.Sh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::R(A),XQ(a)
    • Q(a);OGATE,P_SPINQ(a),XP(G)::QAR1(F),XQ(a)
  • Actual
    • S(H);
    • Threat
      • DUALS(3)
    • Vars
      • Q(a);XR(A)::S(H)
      • Q(a);XP(E)::S(H)
      • Q(a);XP(C)::S(H)
      • Q(a);P_PINS(H),P_SPINQ(a),XP(D)::S(B)
      • Q(a);XP(G)::S(H)
      • P(d);OGATEB,XS(H)::QAB(F)
      • B(e);::S(H)
      • Q(a);::S(H)
      • Q(a);OGATE,P_PINS(H)::P(C),XQ(a)
      • P(c);N_GUARD::S(B)
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