MESON Chess Problem Database

Problem Display
PID: 23346 (8/P7/8/3pBp2/4kP1K/4p3/2P1p2P/1Q2RN1N w - - 0 1)

Lindgren, Frithiof

Aftonbladet, 1928

8/P7/8/3pBp2/4kP1K/4p3/2P1p2P/1Q2RN1N

#2

10 + 5

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qb7#
      • 2.a8Q#
      • 2.a8B#
  • Tries
    • 1.Rxe2?
      • threat
        • 2.Sd2#
        • 2.Rxe3#
      • 1...d4
        • 2.Qb7#
        • 2.a8Q#
        • 2.a8B#
      • 1...Kf3!
    • 1.Qb3?
      • threat
        • 2.Qxe3#
      • 1...Kf3
        • 2.Qxd5#
      • 1...d4
        • 2.Qb7#
        • 2.a8Q#
        • 2.a8B#
      • 1...exf1S!
    • 1.Qb4+?
      • 1...d4
        • 2.Qb7#
        • 2.a8Q#
        • 2.a8B#
      • 1...Kf3!
  • Keys
    • 1.Qd1!
      • 1...Kf3
        • 2.Qxd5#
      • 1...exd1Q
        • 2.Rxe3#
      • 1...exd1S
        • 2.Sd2#
      • 1...exd1B
        • 2.Sd2#
        • 2.Rxe3#
      • 1...exd1R
        • 2.Rxe3#
      • 1...exf1Q
        • 2.Sg3#
      • 1...exf1S
        • 2.Sf2#
      • 1...exf1B
        • 2.Sf2#
        • 2.Sg3#
      • 1...exf1R
        • 2.Sg3#
      • 1...d4
        • 2.a8Q#
        • 2.a8B#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);P_PINP(b),XP(a)
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB(A),XP(d)
      • Refutation
        • P(a);P_SPINP(b),XS(C)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAB(A),XP(d)
      • P(a);OGATE,P_SPINP(b),XQ(A)::R1(B),XP(b)
      • P(a);P_SPINP(b),XQ(A)::S(C)
      • P(a);P_SPINP(b),XS(C)::S(D)
      • P(d);::P=Q
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