MESON Chess Problem Database

Problem Display
PID: 18077 (8/2R5/2Pp2p1/p2k2p1/p5N1/P2BK3/8/4Q3 w - - 0 1)

Froberg, Johan Hilding Laurentius

Eskilstuna Kuriren, 1953

8/2R5/2Pp2p1/p2k2p1/p5N1/P2BK3/8/4Q3

#2

7 + 6

3105 FIDE Album (1945-1955) 1964
3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxa5#
    • 1...Ke6
      • 2.Kd4#
  • Tries
    • 1.Bf1?
      • 1...Kc5
        • 2.Qxa5#
      • 1...Ke6!
    • 1.Be2?
      • 1...Kc5
        • 2.Qxa5#
      • 1...Ke6!
    • 1.Ba6?
      • 1...Kc5
        • 2.Qxa5#
      • 1...Ke6!
    • 1.Rc8?
      • 1...Kc5
        • 2.Qxa5#
      • 1...Ke6!
    • 1.Qd2?
      • 1...Kc5
        • 2.Qxa5#
      • 1...Ke6!
    • 1.Qb4?
      • threat
        • 2.Bc4#
        • 2.Qc4#
      • 1...Ke6
        • 2.Qe4#
      • 1...axb4!
    • 1.Qa1?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6!
    • 1.Qb1?
      • 1...Kc5
        • 2.Qb5#
      • 1...Ke6!
    • 1.Qf1?
      • 1...Ke6
        • 2.Qf7#
      • 1...Kc5!
    • 1.Qg1?
      • 1...Kc5
        • 2.Ke4#
      • 1...Ke6!
    • 1.Qh1+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc5!
    • 1.Qe2?
      • 1...Ke6
        • 2.Kd4#
      • 1...Kc5!
  • Keys
    • 1.Qf2!
      • 1...Kc5
        • 2.Ke4#
      • 1...Ke6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(A),XP(b)
    • K(c);S_FLIGHT::QAR(A)+K(D)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAB(A)+K(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);S_FLIGHT::QAR(A)+K(D)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT::QAB(A)+K(D)
      • K(c);S_FLIGHT::QAB1(A)
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