MESON Chess Problem Database

Problem Display
PID: 196551 (4Q3/1n6/1K6/7N/1B1k4/1p2N3/3pP1p1/8 w - - 0 1)

Karin, Aleksey

Zadachi i Etyudi, 1995

4Q3/1n6/1K6/7N/1B1k4/1p2N3/3pP1p1/8

#2

6 + 5

5007 Zadachi i Etyudi 1996
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5+?
      • 1...Kc4
        • 2.Qb5#
        • 2.Qe4#
      • 1...Kd5!
    • 1.Sg3?
      • threat
        • 2.Sgf5#
        • 2.Qe4#
      • 1...Sc5
        • 2.Sgf5#
      • 1...Sd6!
    • 1.Ba3?
      • threat
        • 2.Bb2#
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...b2
        • 2.Bxb2#
      • 1...d1S!
    • 1.Bc5+?
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...Sxc5!
    • 1.Bd6?
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...Sxd6!
  • Keys
    • 1.Be7!
      • threat
        • 2.Bf6#
      • 1...Kc3
        • 2.Qh8#
      • 1...Kxe3
        • 2.Bc5#
      • 1...Ke4
        • 2.Bc5#
        • 2.Bf6#
      • 1...Ke5
        • 2.Bc5#

Anticipated by 4539(1877), 120718(1910)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::S(D)
      • Refutation
        • S(e);
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • P(c);::B(C),XP(c)
      • Refutation
        • P(a);
    • Try
      • B(C);CHECK
      • Refutation
        • S(e);XB(C)
    • Try
      • B(C);
      • Threat
        • QAB1(F)
      • Refutation
        • S(e);XB(C)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • K(d);S_FLIGHT::QAB(F)
      • K(d);S_FLIGHT,XS(B)::QAR(F)+B(C),DCHECK
      • K(d);S_FLIGHT::QAR(F)+B(C)
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