MESON Chess Problem Database

Problem Display
PID: 196960 (K2B4/8/7b/6pk/6p1/1B6/8/5Q2 w - - 0 1)

Rubens, Nathan

American Chess Bulletin, 1919

K2B4/8/7b/6pk/6p1/1B6/8/5Q2

#2

4 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qf7#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qh1#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
  • Keys
    • 1.Qf4!
      • 1...Kh4
        • 2.Qh2#
      • 1...Kg6
        • 2.Qf7#
      • 1...gxf4
        • 2.Bf7#
      • 1...Bg7
        • 2.Qxg5#
      • 1...Bf8
        • 2.Qxg5#
      • 1...g3
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR(A)
      • Vars
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b)
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • K(c);S_FLIGHT::QAB1(A)
      • P(b);XQ(A)::B(B)
      • B(d);N_GUARD::QAR1(A),XP(b)
      • P(a);::B(B)
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