MESON Chess Problem Database

Problem Display
PID: 164683 (8/2Q2K2/6NN/8/4P3/5bPk/7p/7B w - - 0 1)

Borisenka, I

Sachmatija, 2007

8/2Q2K2/6NN/8/4P3/5bPk/7p/7B

#2

7 + 3

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qh4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Bxh1!
    • 1.Qd8?
      • threat
        • 2.Qh4#
      • 1...Kxg3
        • 2.Qh4#
      • 1...Bxh1!
    • 1.Qd7+?
      • 1...Bg4
        • 2.Qxg4#
      • 1...Kxg3!
    • 1.Qe7?
      • threat
        • 2.Qh4#
      • 1...Kxg3
        • 2.Qh4#
      • 1...Bxh1!
    • 1.Qc8+?
      • 1...Bg4
        • 2.Qxg4#
      • 1...Kxg3!
  • Keys
    • 1.Qc3!
      • 1...Kxg3
        • 2.Qxf3#
      • 1...Bxh1
        • 2.Sf4#
      • 1...Bxe4
        • 2.Sf4#
      • 1...Bd1
        • 2.Sf4#
      • 1...Be2
        • 2.Sf4#
      • 1...Bg2
        • 2.Sf4#
      • 1...Bg4
        • 2.Sf4#
      • 1...Bh5
        • 2.g4#

Anticipated by 119818(1909)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(b);N_GUARD::QAB1(F),XB(b)
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(F);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB1(F),XB(b)
      • Refutation
        • K(c);P-FLIGHT,XP(B)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(b);XB(A)
    • Try
      • Q(F);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB1(F),XB(b)
      • Refutation
        • K(c);P-FLIGHT,XP(B)
  • Actual
    • Q(F);
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINB(b),XP(B)::QAR1(F),XB(b)
      • B(b);XB(A)::S(D)
      • B(b);XP(C)::S(D)
      • B(b);::S(D)
      • B(b);P_PINS(D)::QAR(F)+P(B)
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