MESON Chess Problem Database

Problem Display
PID: 81205 (8/1K6/N7/3Qn3/k7/1p6/2N5/8 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

StrateGems, 2003

8/1K6/N7/3Qn3/k7/1p6/2N5/8

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb3+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Kxb3!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Sxc4!
    • 1.Qe4+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Sc4!
    • 1.Qd4+?
      • 1...Ka5
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Sc4!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sc5#
        • 2.Qa5#
        • 2.Qb5#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Sd7+
        • 2.Qxd7#
      • 1...bxc2
        • 2.Qa2#
      • 1...Sd3
        • 2.Qc6#
        • 2.Qa5#
        • 2.Qb5#
        • 2.Qd7#
      • 1...Sc6
        • 2.Sc5#
        • 2.Qxc6#
        • 2.Qb5#
      • 1...b2
        • 2.Sc5#
        • 2.Qa2#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • S(c);CHECK,N_GUARD::QAR2(B),XS(c)
      • S(c);CHECK,N_GUARD::QAB(B),XS(c)
      • P(a);OGATE,XS(A)::QAR2(B)
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