MESON Chess Problem Database

Problem Display
PID: 27863 (8/1Q5B/8/P1Pp4/p2P4/BpPKbp2/p1pR4/rkNNRr2 w - - 0 1)

Stocchi, Ottavio

Revista Romana de Sah, 1931

8/1Q5B/8/P1Pp4/p2P4/BpPKbp2/p1pR4/rkNNRr2

#2

12 + 10

3100 Selected Stocchi (I) 2001
23 Die Schwalbe 2003
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...cxd1R
      • 2.Kxe3#
    • 1...b2
      • 2.Qxb2#
  • Tries
    • 1.Kxe3?
      • threat
        • 2.Bxc2#
      • 1...b2
        • 2.Qxb2#
      • 1...Rxe1+!
  • Keys
    • 1.Sxb3!
      • threat
        • 2.Sc1#
      • 1...c1S+
        • 2.Sxc1#
      • 1...cxd1Q
        • 2.Kxe3#
      • 1...cxd1S
        • 2.Rb2#
      • 1...cxd1B
        • 2.Kxe3#
        • 2.Rb2#
      • 1...axb3
        • 2.Qxb3#
      • 1...c1Q
        • 2.Sxc1#
      • 1...c1B
        • 2.Kxe3#
        • 2.Sxc1#
      • 1...c1R
        • 2.Sxc1#
        • 2.Rb2#

This anticipates 15841(1988)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(e);P_PINR(D),XS(B)::B(L)+K(G),XB(g)
    • P(f);OGATE::QAR1(K),XP(f)
  • Tries
    • Try
      • K(G);N_PINP(f),P-FLIGHT,P_PINP(e),XB(g)
      • Threat
        • B(L),XP(e)
      • Vars
        • P(f);N_SPINP(e),OGATE,P_SPINP(f)::QAR1(K),XP(f)
      • Refutation
        • R(c);CHECK,XR(C)
  • Actual
    • S(A);XP(f)
    • Threat
      • QAR(K)+S(A)
    • Vars
      • P(e);CHECK::QAR(K)+S(A),XS(e)
      • P(e);P_PINR(D),P_SPINQ(e),XS(B)::B(L)+K(G),XB(g)
      • P(e);OGATE,P_SPINS(e),XS(B)::R1(D)
      • P(i);OGATE,P_SPINP(i),XS(A)::QAR2(K),XP(i)
      • P(e);::QAR(K)+S(A),XQ(e)
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