MESON Chess Problem Database

Problem Display
PID: 249862 (r1B3n1/2P2R2/3P1N2/p1KNk3/2P1Pp2/6r1/2p2R2/3b3Q w - - 0 1)

Popovski, Aleksandr

Schach-Aktiv, 1994

r1B3n1/2P2R2/3P1N2/p1KNk3/2P1Pp2/6r1/2p2R2/3b3Q

#2

11 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Qh5#
    • 1...Bf3
      • 2.Qa1#
    • 1...Sxf6
      • 2.Re7#
    • 1...Sh6
      • 2.Re7#
    • 1...Se7
      • 2.Rxe7#
  • Tries
    • 1.Sg4+?
      • 1...Rxg4
        • 2.Rf5#
      • 1...Bxg4!
    • 1.Sxg8?
      • threat
        • 2.Rf5#
        • 2.Re7#
      • 1...Rxc8
        • 2.Re7#
      • 1...Rg2
        • 2.Re7#
      • 1...Rf3
        • 2.Re7#
      • 1...Bf3
        • 2.Re7#
      • 1...f3
        • 2.Re7#
      • 1...Rg5
        • 2.Re7#
      • 1...Rg6
        • 2.Rf5#
      • 1...Rg7
        • 2.Rf5#
      • 1...Bg4!
    • 1.Bf5?
      • threat
        • 2.Sd7#
      • 1...Sxf6
        • 2.Re7#
      • 1...Rd8!
    • 1.Qh5+?
      • 1...Rg5
        • 2.Qxg5#
      • 1...Bxh5!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sd7#
      • 1...Sxf6
        • 2.Re7#
      • 1...Rf3
        • 2.Sg6#
      • 1...Bf3
        • 2.Sd3#
      • 1...Rg2
        • 2.Sd3#
      • 1...Bg4
        • 2.Sg6#

There are these versions: 179208

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,S_CUTB(a)::QAR(A)
    • B(a);OGATE::QAB(A)
    • S(h);N_GUARD,XS(H)::R(J)
    • S(h);N_GUARD::R(J)
    • S(h);N_GUARD::R(J),XS(h)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • R(c);XS(H)::R1(J)
      • Refutation
        • B(a);XS(H)
    • Try
      • S(H);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(g);P_PINP(I),XB(K)::R(J)
        • R(c);::R(J)
        • B(a);::R(J)
        • P(d);::R(J)
        • R(c);::R1(J)
      • Refutation
        • B(a);
    • Try
      • B(K);
      • Threat
        • S(H)
      • Vars
        • S(h);N_GUARD,XS(H)::R(J)
      • Refutation
        • R(g);
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR2(A),XR(c)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • S(F);XP(d)
    • Threat
      • S(H)
    • Vars
      • S(h);N_GUARD,SBLOCK,XS(H)::R(J)
      • R(c);N_GUARD::S(F)
      • B(a);S_CUTR(c)::S(F)
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