MESON Chess Problem Database

Problem Display
PID: 102973 (r2nn3/p3q3/p1kPp3/P1N3bR/6p1/2Q5/6K1/3R1B2 w - - 0 1)

Kofman, Rafael Moiseevich

Themes-64, 1968

r2nn3/p3q3/p1kPp3/P1N3bR/6p1/2Q5/6K1/3R1B2

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4+?
      • 1...Kb7
        • 2.Rb1#
      • 1...Kd7!
    • 1.Se4+?
      • 1...Kb7
        • 2.Rb1#
      • 1...Kd7!
    • 1.Sxa6+?
      • 1...Kb7
        • 2.Rb1#
      • 1...Kd7!
    • 1.Sxe6+?
      • 1...Kb7
        • 2.Rb1#
      • 1...Kd7!
    • 1.Sb7+?
      • 1...Kxb7
        • 2.Rb1#
      • 1...Kd7!
    • 1.Sd7+?
      • 1...Kb7
        • 2.Rb1#
      • 1...Kxd7!
    • 1.Qf3+?
      • 1...Kxc5
        • 2.Qc3#
      • 1...gxf3+!
  • Keys
    • 1.Sd3+!
      • 1...Kb5
        • 2.Sb2#
      • 1...Kd5
        • 2.Sf2#
      • 1...Kxd6
        • 2.Sf4#
      • 1...Kb7
        • 2.Rb1#
      • 1...Kd7
        • 2.Se5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK,XP(e)
      • Vars
        • K(d);S_FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(F)::R(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::R(A)
      • Refutation
        • K(d);S_FLIGHT,XS(F)
    • Try
      • Q(D);CHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,P_SPINB(b),XS(F)::QAR2(D)
      • Refutation
        • P(a);CHECK,XQ(D)
  • Actual
    • S(F);CHECK
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::B(B)+S(F)
      • K(d);P_SPINB(b),S_FLIGHT::R(A)+S(F)
      • K(d);P-FLIGHT,XP(H)::R(A)+S(F)
      • K(d);S_FLIGHT::R(A)
      • K(d);S_FLIGHT::S(F)
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