MESON Chess Problem Database

Problem Display
PID: 93412 (Q7/8/3nNp2/3PkB1R/4N1K1/3R4/1P6/8 w - - 0 1)

Guttman, Newman

Shakhmaty v SSSR, 1961

Q7/8/3nNp2/3PkB1R/4N1K1/3R4/1P6/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.S4g5?
      • threat
        • 2.Sf3#
      • 1...fxg5
        • 2.Qh8#
      • 1...Sc4
        • 2.Sf7#
      • 1...Se4
        • 2.Sf7#
      • 1...Sb5
        • 2.Sf7#
      • 1...Sb7
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sc8
        • 2.Sf7#
      • 1...Se8
        • 2.Sf7#
      • 1...Sxf5!
    • 1.Sf4?
      • threat
        • 2.Sg6#
      • 1...Sxf5
        • 2.Qe8#
      • 1...Sxe4!
    • 1.S6c5?
      • threat
        • 2.Sd7#
      • 1...Sxf5
        • 2.Rxf5#
        • 2.Qb8#
        • 2.Qe8#
      • 1...Sxe4!
    • 1.S6g5?
      • threat
        • 2.Sf3#
      • 1...Sxe4
        • 2.Sf7#
      • 1...fxg5
        • 2.Qh8#
      • 1...Sxf5!
    • 1.Sd8?
      • threat
        • 2.Sc6#
      • 1...Sxe4
        • 2.Sf7#
      • 1...Sxf5!
    • 1.Sf8?
      • threat
        • 2.Sg6#
        • 2.Sd7#
      • 1...Sxf5
        • 2.Qe8#
      • 1...Sxe4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sf3#
      • 1...Sxf5
        • 2.Qb8#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Se4
        • 2.Sc4#
      • 1...Sb5
        • 2.Sc4#
      • 1...Sb7
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#
      • 1...Se8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(c);OGATEB,XS(C)::QAB(I)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
      • Refutation
        • S(b);XB(F)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(b);N_GUARD,P_SPINS(b),XB(F)::QAR(I)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(b);N_GUARD,XS(C)::S(H)
        • P(c);OGATEB,XS(H)::QAB(I)
      • Refutation
        • S(b);XB(F)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(b);N_GUARD,XS(C)::S(H)
      • Refutation
        • S(b);P_SPINS(b),XB(F)
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,P_SPINS(b),XB(F)::QAR(I)
      • Refutation
        • S(b);XS(C)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • S(b);OGATEB,P_SPINS(b),XB(F)::QAB(I)
      • S(b);N_GUARD::S(C),XS(b)
      • S(b);N_GUARD::S(C)
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