MESON Chess Problem Database

Problem Display
PID: 86481 (8/8/3p2R1/4k3/8/3Q2K1/b7/3B4 w - - 0 1)

Melnichuk, Aleksandr Nikolaevich

Kudesnik, 2006

8/8/3p2R1/4k3/8/3Q2K1/b7/3B4

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bb3?
      • threat
        • 2.Re6#
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Bxb3!
    • 1.Bf3?
      • threat
        • 2.Qe4#
      • 1...Bb1
        • 2.Qd5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5
        • 2.Bc2#
      • 1...Ke4!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Bc2#
      • 1...Kd5!
    • 1.Qd4+?
      • 1...Kf5
        • 2.Bc2#
      • 1...Kxd4!
    • 1.Qxd6+?
      • 1...Kf5
        • 2.Bc2#
      • 1...Ke4!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Bd5
        • 2.Qc3#
      • 1...Be6
        • 2.Qe4#
      • 1...d5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • B(a);XB(A)
    • Try
      • B(A);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);N_GUARD::QAR1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(a);SBLOCK::QAB(B)
      • B(a);::QAR1(B)
      • P(c);SBLOCK::QAR2(B)
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