MESON Chess Problem Database

Problem Display
PID: 224233 (4Q3/pn6/pN6/k2PN3/P2P4/8/1KB1P3/8 w - - 0 1)

Eriksson, Karl August

Globe Problem And Solution Ty. , 1888

4Q3/pn6/pN6/k2PN3/P2P4/8/1KB1P3/8

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Sc6#
    • 1...axb6
      • 2.Sc6#
  • Tries
    • 1.Qc6?
      • 1...Kb4
        • 2.Qc3#
      • 1...axb6
        • 2.Qc3#
      • 1...Sd8
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd6!
    • 1.Qe7?
      • threat
        • 2.Sec4#
        • 2.Sbc4#
      • 1...Kxb6
        • 2.Sc4#
      • 1...axb6
        • 2.Sc4#
        • 2.Sc6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd6!
    • 1.Qc8?
      • 1...Kb4
        • 2.Sc6#
        • 2.Qc3#
      • 1...Kxb6
        • 2.Sc4#
      • 1...axb6
        • 2.Sc6#
        • 2.Qc3#
      • 1...Sd8
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd6!
    • 1.Qd8?
      • threat
        • 2.Sc6#
      • 1...Kb4
        • 2.Sc6#
      • 1...Sxd8!
  • Keys
    • 1.Qb8!
      • 1...Kb4
        • 2.Sc6#
      • 1...Kxb6
        • 2.Sc4#
      • 1...axb6
        • 2.Sc6#
      • 1...Sd8
        • 2.Sbc4#
      • 1...Sc5
        • 2.Sc6#
        • 2.Sbc4#
      • 1...Sd6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(G)
    • P(c);SBLOCK,XS(H)::S(G)
  • Tries
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT::QAB1(I)
        • P(c);SBLOCK,XS(H)::QAB(I)
        • S(d);N_GUARD::QAR2(I)
        • S(d);N_GUARD::QAR2(I),XS(d)
      • Refutation
        • S(d);
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XS(H)::S(G)
        • S(d);N_GUARD::QAR2(I),XS(d)
      • Refutation
        • S(d);
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT,XS(H)::S(G)
        • S(d);N_GUARD::QAR2(I)
        • S(d);N_GUARD::QAR2(I),XS(d)
      • Refutation
        • S(d);
    • Try
      • Q(I);
      • Threat
        • S(G)
      • Vars
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • S(d);XQ(I)
  • Actual
    • Q(I);
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);P_SPINS(d),S_FLIGHT,XS(H)::S(G)
      • P(c);SBLOCK,XS(H)::S(G)
      • S(d);::S(H)
      • S(d);::S(G)
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