MESON Chess Problem Database

Problem Display
PID: 30094 (b7/B2Qbp2/r7/6pp/r3k2n/3NN3/2P5/3R1R1K w - - 0 1)

Stocchi, Ottavio

Kameterna Chess Circle, 1949

b7/B2Qbp2/r7/6pp/r3k2n/3NN3/2P5/3R1R1K

#2

8 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Ra3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...R4a5
      • 2.Qd4#
    • 1...Rc6
      • 2.Qd5#
    • 1...Bb4
      • 2.Qd4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bc6
      • 2.Qxe7#
    • 1...Sg2
      • 2.Qf5#
    • 1...Sf3
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qf5#
    • 1...g4
      • 2.Rf4#
  • Tries
    • 1.Qxa4+?
      • 1...Bb4
        • 2.Qxb4#
      • 1...Rxa4!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Rde1#
      • 1...Rd6
        • 2.Sc5#
      • 1...Bd6
        • 2.Sf6#
      • 1...Ra1
        • 2.Qd4#
      • 1...Bb4
        • 2.Qd4#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Sg2
        • 2.Qf5#
      • 1...Sf3
        • 2.Sgf2#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::QAR1(H)
    • R(a);N_GUARD::QAR1(H),XR(a)
    • R(f);S_CUTB(i)::QAB1(H)
    • B(g);S_CUTR(a)::QAR1(H)
    • B(i);N_GUARD::QAB1(H),XB(i)
    • B(i);S_CUTR(f)::QAR(H),XB(g)
    • S(c);N_GUARD::QAB1(H)
    • S(c);N_GUARD::QAB1(H),XS(c)
    • P(d);N_GUARD::R1(B)
  • Tries
    • Try
      • Q(H);CHECK,XR(a)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR(H),XB(g)
      • Refutation
        • R(f);XQ(H)
  • Actual
    • S(F);
    • Threat
      • R(A)
    • Vars
      • R(f);S_CUTB(g)::S(E)
      • B(g);N_GUARD,S_CUTR(f)::S(F)
      • R(a);N_GUARD::QAR1(H)
      • B(g);S_CUTR(a)::QAR1(H)
      • B(g);N_GUARD::S(E),XB(g)
      • S(c);N_GUARD::QAB1(H)
      • S(c);SBLOCK::S(F)
      • S(c);N_GUARD::QAB1(H),XS(c)
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