MESON Chess Problem Database

Problem Display
PID: 238046 (Qn6/7B/2p3R1/2P2NK1/R2Pk1p1/6r1/2Pprp2/3N1n2 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Revista Romana de Sah, 1984

Qn6/7B/2p3R1/2P2NK1/R2Pk1p1/6r1/2Pprp2/3N1n2

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qxc6#
    • 1...Sd7
      • 2.Qxc6#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Rd6#
      • 1...Kd5
        • 2.Rd6#
      • 1...Se3
        • 2.Sc3#
      • 1...Rf3!
    • 1.Rd6?
      • threat
        • 2.Sh4#
      • 1...Kf3
        • 2.Sh4#
      • 1...Rf3
        • 2.Sg3#
      • 1...Se3!
    • 1.Re6+?
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5!
  • Keys
    • 1.Rxc6!
      • threat
        • 2.Re6#
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5
        • 2.Rd6#
      • 1...Sxc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(i);N_GUARD::QAB(J),XP(h)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(I)+R(H)
      • Vars
        • K(f);S_FLIGHT::R1(H)
        • S(a);SBLOCK,S_CUTR(e)::S(A)
      • Refutation
        • R(e);
    • Try
      • R(H);
      • Threat
        • B(I)+S(F)
      • Vars
        • K(f);S_FLIGHT::S(F)
        • R(e);SBLOCK::B(I)+S(F),DCHECK
      • Refutation
        • S(a);
    • Try
      • R(H);CHECK
      • Vars
        • K(f);S_FLIGHT::S(F)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(H);XP(h)
    • Threat
      • QAB(J)+R(H),DCHECK
    • Vars
      • K(f);S_FLIGHT::S(F)
      • K(f);S_FLIGHT::QAB(J)+R(H),DCHECK
      • S(i);OGATE,P_SPINS(i),XR(H)::QAB(J),XS(i)
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