MESON Chess Problem Database

Problem Display
PID: 27759 (8/8/2p3p1/2p1P1Q1/2Pkq3/3N1pK1/1P1N1P2/5B2 w - - 0 1)

Lindgren, Bo Waldemar

Eskilstuna Kuriren, 1950

8/8/2p3p1/2p1P1Q1/2Pkq3/3N1pK1/1P1N1P2/5B2

#2

9 + 6

3105 FIDE Album (1945-1955) 1964
56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qe3#
    • 1...Qf5
      • 2.Qe3#
    • 1...Qe1
      • 2.Qd8#
    • 1...Qe2
      • 2.Qd8#
    • 1...Qe3
      • 2.Qxe3#
      • 2.Qd8#
      • 2.fxe3#
    • 1...Qf4+
      • 2.Qxf4#
    • 1...Qg4+
      • 2.Qxg4#
    • 1...Qh4+
      • 2.Qxh4#
    • 1...Qxe5+
      • 2.Qxe5#
  • Tries
    • 1.Kh2?
      • 1...Qf4+
        • 2.Qxf4#
      • 1...Qh4+
        • 2.Qxh4#
      • 1...Qxe5+
        • 2.Qxe5#
      • 1...Qe2
        • 2.Qd8#
      • 1...Qd5
        • 2.Qe3#
      • 1...Qf5
        • 2.Qe3#
      • 1...Qe1
        • 2.Qd8#
      • 1...Qe3
        • 2.Qxe3#
        • 2.Qd8#
        • 2.fxe3#
      • 1...Qg4
        • 2.Qe3#
        • 2.Qxg4#
      • 1...Qxd3!
    • 1.Sxe4?
      • 1...Kxe4
        • 2.Qf4#
        • 2.Qg4#
      • 1...Kxc4!
    • 1.Qh4?
      • threat
        • 2.Qxe4#
      • 1...Qf4+
        • 2.Qxf4#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qxh4+!
    • 1.Qg4?
      • threat
        • 2.Qxe4#
      • 1...Qf4+
        • 2.Qxf4#
      • 1...Qxg4+!
  • Keys
    • 1.e6!
      • threat
        • 2.Qxc5#
      • 1...Qf4+
        • 2.Qxf4#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qh4+
        • 2.Qxh4#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qxd3
        • 2.Qf6#
      • 1...Qe2
        • 2.Qd8#
      • 1...Qd5
        • 2.Qe3#
      • 1...Qf5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::QAB1(I)
    • Q(c);N_GUARD,P_PINP(D)::QAR(I)
    • Q(c);N_GUARD::QAR(I)
    • Q(c);CHECK,OGATEB::QAR2(I),XQ(c)
    • Q(c);CHECK,OGATEB::QAR(I),XQ(c)
    • Q(c);CHECK,OGATE,XP(H)::QAB1(I),XQ(c)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • Q(c);CHECK,OGATEB::QAR2(I),XQ(c)
        • Q(c);CHECK,OGATEB::QAR(I),XQ(c)
        • Q(c);CHECK,OGATE,XP(H)::QAB1(I),XQ(c)
        • Q(c);N_GUARD,P_PINP(D)::QAR(I)
        • Q(c);N_GUARD::QAB1(I)
        • Q(c);N_GUARD::QAR(I)
      • Refutation
        • Q(c);XS(E)
    • Try
      • S(C);XQ(c)
      • Refutation
        • K(b);P-FLIGHT,XP(G)
    • Try
      • Q(I);P_PINQ(c)
      • Threat
        • QAR1(I),XQ(c)
      • Vars
        • Q(c);CHECK,OGATEB::QAR2(I),XQ(c)
        • Q(c);CHECK,OGATEB::QAR(I),XQ(c)
      • Refutation
        • Q(c);CHECK,N_SPINQ(c),XQ(I)
    • Try
      • Q(I);P_PINQ(c)
      • Threat
        • QAR1(I),XQ(c)
      • Vars
        • Q(c);CHECK,OGATEB::QAR2(I),XQ(c)
      • Refutation
        • Q(c);CHECK,N_SPINQ(c),XQ(I)
  • Actual
    • P(H);
    • Threat
      • QAB1(I),XP(d)
    • Vars
      • Q(c);CHECK,OGATEB::QAR2(I),XQ(c)
      • Q(c);CHECK,OGATEB::QAR(I),XQ(c)
      • Q(c);CHECK,N_GUARD::QAB1(I),XQ(c)
      • Q(c);N_GUARD,XS(E)::QAB(I)
      • Q(c);N_GUARD::QAR(I)
      • Q(c);N_GUARD::QAB1(I)
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