MESON Chess Problem Database

Problem Display
PID: 63964 (5B2/1Qp4b/4n3/K1P5/2Nk4/1PR1p3/1p1P1N2/1B1n1rb1 w - - 0 1)

Stocchi, Ottavio

Parallele 50, 1951

5B2/1Qp4b/4n3/K1P5/2Nk4/1PR1p3/1p1P1N2/1B1n1rb1

#2

10 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Rxd3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bg8
      • 2.Rd3#
      • 2.Qe4#
    • 1...Sxc3
      • 2.dxe3#
    • 1...Sxc5
      • 2.Bg7#
    • 1...c6
      • 2.Qd7#
  • Tries
    • 1.Be4?
      • threat
        • 2.Rd3#
        • 2.Qd5#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sxf2
        • 2.Qd5#
      • 1...Sxc3
        • 2.dxe3#
      • 1...Sxc5
        • 2.Bg7#
        • 2.Qd5#
      • 1...Sxf8
        • 2.Qd5#
      • 1...exd2
        • 2.Rd3#
      • 1...b1Q
        • 2.Qd5#
      • 1...b1B
        • 2.Qd5#
      • 1...c6
        • 2.Rd3#
        • 2.Qd7#
      • 1...Sf4!
    • 1.Bg7+?
      • 1...Kxc5
        • 2.Qb5#
        • 2.b4#
      • 1...Sxg7!
    • 1.dxe3+?
      • 1...Kxc3
        • 2.Qb4#
      • 1...Sxe3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rd3#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sxc3
        • 2.dxc3#
      • 1...Sxc5
        • 2.Bxc5#
      • 1...c6
        • 2.Qd7#
      • 1...Sf2
        • 2.dxe3#
      • 1...Sf4
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::R1(E),XB(i)
    • B(i);N_GUARD::QAR1(I),XB(i)
    • S(a);N_GUARD,SBLOCK,XR(E)::P(B),XP(e)
    • S(g);N_GUARD,SBLOCK,XP(H)::B(J)
    • P(h);OGATE::QAR(I)
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);OGATE,XB(A)::QAR1(I),XB(i)
        • S(a);XS(C)::QAR1(I)
        • S(a);N_GUARD,SBLOCK,XR(E)::P(B),XP(e)
        • S(g);XB(J)::QAR1(I)
        • P(e);XP(B)::R1(E)
        • P(d);::QAR1(I)
      • Refutation
        • S(g);
    • Try
      • B(J);CHECK
      • Refutation
        • S(g);XB(J)
    • Try
      • P(B);CHECK,XP(e)
      • Vars
        • K(f);S_FLIGHT,XR(E)::QAB1(I)
      • Refutation
        • S(a);XP(B)
  • Actual
    • S(C);
    • Threat
      • R1(E)
    • Vars
      • B(i);OGATE,XS(C)::QAR1(I),XB(i)
      • S(a);OGATE,XR(E)::P(B),XS(a)
      • S(g);OGATE,XP(H)::B(J),XS(g)
      • P(h);OGATE::QAR(I)
      • S(a);N_GUARD,S_CUTB(c)::P(B),XP(e)
      • S(g);N_GUARD,S_CUTR(b)::B(J)
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