MESON Chess Problem Database

Problem Display
PID: 231138 (8/8/8/6p1/4B1K1/8/2p2Q2/3k4 w - - 0 1)

Lindgren, Frithiof

Svenska Dagbladet, 1927

8/8/8/6p1/4B1K1/8/2p2Q2/3k4

#2

3 + 3

6490 yacpdb 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qxc2#
    • 1...c1Q
      • 2.Bf3#
    • 1...c1S
      • 2.Bc2#
    • 1...c1B
      • 2.Bc2#
      • 2.Bf3#
    • 1...c1R
      • 2.Bf3#
  • Tries
    • 1.Kf3?
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...g4+!
    • 1.Kg3?
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Bf3#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Bf3#
      • 1...c1R
        • 2.Bf3#
      • 1...g4!
    • 1.Kh3?
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Bf3#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Bf3#
      • 1...c1R
        • 2.Bf3#
      • 1...g4+!
    • 1.Kf5?
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Bf3#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Bf3#
      • 1...c1R
        • 2.Bf3#
      • 1...g4!
    • 1.Kh5?
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Bf3#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Bf3#
      • 1...c1R
        • 2.Bf3#
      • 1...g4!
    • 1.Qe2+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kxe2!
  • Keys
    • 1.Bd3!
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1S
        • 2.Bc2#
      • 1...c1B
        • 2.Bc2#
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#

This anticipates 169406(1930)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(A),XP(b)
    • P(b);SBLOCK::B(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • P(b);SBLOCK::QAB1(A)
        • P(b);SBLOCK::B(B)
      • Refutation
        • P(c);CHECK
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • P(b);SBLOCK::B(B)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • P(b);SBLOCK::B(B)
      • Refutation
        • P(c);CHECK
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • P(b);SBLOCK::B(B)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
        • P(b);SBLOCK::B(B)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(A),XP(b)
      • P(b);SBLOCK::QAB1(A)
      • P(b);SBLOCK::B(B)
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Developed and maintained by Brian Stephenson.
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