MESON Chess Problem Database

Problem Display
PID: 19168 (8/8/1R1P4/3p1p2/3kpN2/Q3N1P1/2p5/2K5 w - - 0 1)

Persson, Hol Holger

Mora Tidning, 1934

8/8/1R1P4/3p1p2/3kpN2/Q3N1P1/2p5/2K5

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc2+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke5!
    • 1.Sg4?
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#
      • 1...fxg4!
    • 1.Sexd5?
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qb4#
        • 2.Qc3#
      • 1...Ke5
        • 2.Qb2#
        • 2.Qa1#
        • 2.Qc3#
      • 1...e3!
    • 1.Sxf5+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qb2+?
      • 1...Kc5
        • 2.Se6#
        • 2.Qb4#
      • 1...Kxe3!
    • 1.Qb3?
      • 1...Kc5
        • 2.Se6#
        • 2.Qb4#
      • 1...Ke5!
  • Keys
    • 1.Qa7!
      • 1...Kc3
        • 2.Qa1#
      • 1...Kxe3
        • 2.Rb3#
      • 1...Kc5
        • 2.Se6#
      • 1...Ke5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • P(e);XS(C)
    • Try
      • S(C);XP(d)
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);
    • Try
      • S(C);CHECK,XP(e)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB(B)
      • K(b);S_FLIGHT,XS(C)::QAB(B)+R(F),DCHECK
      • K(b);S_FLIGHT::S(E)
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