MESON Chess Problem Database

Problem Display
PID: 71703 (8/8/8/3B3K/7p/8/4p1Pk/4Q3 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1931

8/8/8/3B3K/7p/8/4p1Pk/4Q3

#2

4 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1+?
      • 1...Kg3
        • 2.Qxh4#
      • 1...Kxh1!
    • 1.g3?
      • 1...hxg3
        • 2.Qh1#
      • 1...h3
        • 2.Qf2#
      • 1...Kh3!
  • Keys
    • 1.g4!
      • 1...Kh3
        • 2.Qxh4#
      • 1...hxg4 ep
        • 2.Qh1#
      • 1...h3
        • 2.Qf2#

Anticipated by 21064(1916)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • P(B);
      • Vars
        • P(c);SBLOCK,XP(B)::QAR1(A)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(A),XP(c)
      • P(c);EP,XP(B)::QAR1(A)
      • P(c);SBLOCK::QAR2(A)
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