MESON Chess Problem Database

Problem Display
PID: 120127 (8/7B/7B/1Q6/2pk4/8/8/K7 w - - 0 1)

Aronson, T

Nya Dagligt Allehanda, 1932

8/7B/7B/1Q6/2pk4/8/8/K7

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb2#
  • Tries
    • 1.Kb1?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Ka2?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Bc1?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Be3+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe3!
    • 1.Bf4?
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Bg5?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Bf8?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3
        • 2.Qc5#
      • 1...Ke3!
    • 1.Bb1?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Bc2?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Be4?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3
        • 2.Qd5#
      • 1...Kxe4!
    • 1.Bf5?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
    • 1.Bg6?
      • 1...Kc3
        • 2.Qb2#
      • 1...c3!
  • Keys
    • 1.Bg8!
      • 1...Kc3
        • 2.Qxc4#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Ke4
        • 2.Qd5#
      • 1...c3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XB(C)
    • Try
      • B(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XB(D)
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
  • Actual
    • B(D);
    • Vars
      • K(b);S_FLIGHT::QAR1(B),XP(a)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
      • K(b);P-FLIGHT::QAB1(B)
      • P(a);SBLOCK::QAR1(B)
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