MESON Chess Problem Database

Problem Display
PID: 28906 (K2Q1b1q/2p3p1/nRrB1n2/1p6/BNk5/8/1R1P2N1/r6b w - - 0 1)

Stocchi, Ottavio

1st Prize, Wiadomoscy Szachowy, 1936

K2Q1b1q/2p3p1/nRrB1n2/1p6/BNk5/8/1R1P2N1/r6b

#2

9 + 11

3098 FIDE Album (1914-1944) (I) 1971
3100 Selected Stocchi (I) 2001
3666 Problem Paradise 2002
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sh7
      • 2.Qh4#
  • Tries
    • 1.d3+?
      • 1...Kc3
        • 2.Be5#
      • 1...Kd4!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Rc2#
        • 2.Qd4#
      • 1...Kxc5
        • 2.Rxc6#
      • 1...Rxa4
        • 2.Qd4#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Bxc5
        • 2.Bxb5#
      • 1...Sxb4
        • 2.Qd4#
      • 1...Sxc5
        • 2.Se3#
      • 1...bxa4
        • 2.Qd4#
      • 1...Qh3
        • 2.Qd4#
      • 1...Qh4
        • 2.Rc2#
      • 1...Qh7
        • 2.Qd4#
      • 1...Rc1
        • 2.Qd4#
      • 1...Ra2
        • 2.Qd4#
      • 1...Ra3
        • 2.Qd4#
      • 1...Rd6
        • 2.Rc2#
      • 1...Bd6
        • 2.Rc2#
      • 1...Be7
        • 2.Rc2#
      • 1...Se4
        • 2.Qd4#
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sd7
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 18
    • REMOVED MATES = 1
  • Sets
    • S(g);OGATE::QAR(I)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(c);P-FLIGHT::B(G)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XB(G)::R1(F),XR(f)
      • R(a);XB(D)::QAR1(I)
      • R(f);P_PINS(C),SBLOCK,XB(G)::QAB1(I)
      • B(j);P_PINQ(I),SBLOCK,XB(G)::B(D),XP(d)
      • S(e);P_PINB(D),XS(E)::QAR1(I)
      • S(e);P_PINB(D),SBLOCK,XB(G)::S(C)
      • P(d);XB(D)::QAR1(I)
      • Q(k);::QAR1(I)
      • Q(k);::R(A)
      • R(a);::QAR1(I)
      • R(f);P_PINS(C)::R(A)
      • B(j);P_PINQ(I)::R(A)
      • S(g);N_GUARD::QAB1(I),XS(g)
      • S(g);::R(A)
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