MESON Chess Problem Database

Problem Display
PID: 114189 (5B2/1pK5/1p5p/rpRN1P1r/3kPP2/1Ppp2N1/2Q2P2/3nn3 w - - 0 1)

Stocchi, Ottavio

El Ajedrez Espanol, 1951

5B2/1pK5/1p5p/rpRN1P1r/3kPP2/1Ppp2N1/2Q2P2/3nn3

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qxc3#
    • 1...Sxf2
      • 2.Qxf2#
      • 2.Qxc3#
    • 1...Se3
      • 2.Qxc3#
      • 2.fxe3#
    • 1...d2
      • 2.Se2#
    • 1...b4
      • 2.Rc4#
    • 1...bxc5
      • 2.Bg7#
  • Tries
    • 1.Se3?
      • threat
        • 2.Rd5#
      • 1...Rxf5
        • 2.Sexf5#
      • 1...Sxe3
        • 2.Qxc3#
      • 1...bxc5
        • 2.Bg7#
      • 1...b4
        • 2.Rc4#
      • 1...Sxf2!
    • 1.Sb4?
      • threat
        • 2.Rd5#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...bxc5
        • 2.Bg7#
      • 1...Se3
        • 2.Qxc3#
      • 1...Rxf5!
    • 1.Sxb6?
      • threat
        • 2.Rd5#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Se3
        • 2.Qxc3#
      • 1...b4
        • 2.Rc4#
      • 1...Rxf5!
    • 1.Sf6?
      • threat
        • 2.Rd5#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Se3
        • 2.Qxc3#
      • 1...b4
        • 2.Rc4#
      • 1...bxc5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Rd5#
      • 1...Kxc5
        • 2.Sc6#
      • 1...Rxf5
        • 2.Sexf5#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...bxc5
        • 2.Bg7#
      • 1...Se3
        • 2.Qxc3#
      • 1...b4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(A),XP(c)
    • P(d);N_GUARD::S(D)
    • P(g);N_GUARD::R1(G)
    • P(i);SBLOCK,XR(G)::B(K)
  • Tries
    • Try
      • S(H);
      • Threat
        • R1(G)
      • Vars
        • R(h);XP(I)::S(H),XR(h)
        • S(a);N_GUARD,XS(H)::QAB1(A),XP(c)
        • P(i);SBLOCK,XR(G)::B(K)
        • P(g);N_GUARD::R1(G)
      • Refutation
        • S(a);XP(B)
    • Try
      • S(H);
      • Threat
        • R1(G)
      • Vars
        • S(a);OGATE,XP(B)::QAB(A),XS(a)
        • P(i);SBLOCK,XR(G)::B(K)
        • S(a);N_GUARD::QAB1(A),XP(c)
      • Refutation
        • R(h);XP(I)
    • Try
      • S(H);XP(i)
      • Threat
        • R1(G)
      • Vars
        • S(a);OGATE,XP(B)::QAB(A),XS(a)
        • S(a);N_GUARD::QAB1(A),XP(c)
        • P(g);N_GUARD::R1(G)
      • Refutation
        • R(h);XP(I)
    • Try
      • S(H);
      • Threat
        • R1(G)
      • Vars
        • R(h);XP(I)::S(D),XR(h)
        • S(a);OGATE,XP(B)::QAB(A),XS(a)
        • S(a);N_GUARD::QAB1(A),XP(c)
        • P(g);N_GUARD::R1(G)
      • Refutation
        • P(i);XR(G)
  • Actual
    • S(H);
    • Threat
      • R1(G)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT,XR(G)::B(K)+S(H)
      • R(h);XP(I)::S(H),XR(h)
      • S(a);OGATE,XP(B)::QAB(A),XS(a)
      • P(i);SBLOCK,XR(G)::B(K)
      • S(a);N_GUARD::QAB1(A),XP(c)
      • P(g);N_GUARD::R1(G)
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