MESON Chess Problem Database

Problem Display
PID: 103678 (8/b1pN4/r5nq/5p2/1pN1kp2/3R4/1r5p/B1Q2B1K w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Canadian Chess Chat, 1984

8/b1pN4/r5nq/5p2/1pN1kp2/3R4/1r5p/B1Q2B1K

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sd2#
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rb3
      • 2.Sd2#
    • 1...Rxa1
      • 2.Sf6#
    • 1...Ra2
      • 2.Sf6#
    • 1...Ra3
      • 2.Sf6#
    • 1...Ra4
      • 2.Sf6#
    • 1...Ra5
      • 2.Sf6#
    • 1...Rb6
      • 2.Sc5#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bb6
      • 2.Sf6#
    • 1...Bb8
      • 2.Sc5#
    • 1...c6
      • 2.Sd6#
      • 2.Sf6#
  • Keys
    • 1.Scb6!
      • threat
        • 2.Qc4#
        • 2.Qc6#
      • 1...Rxb6
        • 2.Qc4#
      • 1...Bxb6
        • 2.Qc6#
      • 1...Re2
        • 2.Sc5#
        • 2.Qc4#
      • 1...Qg7
        • 2.Qc6#
      • 1...Qh8
        • 2.Qc6#
      • 1...Rc2
        • 2.Sf6#
      • 1...Ra5
        • 2.Qc4#
      • 1...Sh4
        • 2.Qc4#
      • 1...Se5
        • 2.Sc5#
      • 1...Se7
        • 2.Qc4#
      • 1...Sf8
        • 2.Qc4#
      • 1...Sh8
        • 2.Qc4#
      • 1...f3
        • 2.Qc4#
      • 1...c5
        • 2.Qc4#
      • 1...c6
        • 2.Qc4#
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 10
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::S(F)
    • R(a);N_GUARD::S(F),XR(a)
    • R(g);N_GUARD,XB(A)::S(G)
    • R(g);N_GUARD::S(G)
    • R(g);S_CUTB(j)::S(G)
    • R(g);N_GUARD::S(G),XR(g)
    • B(j);N_GUARD::S(G),XB(j)
    • B(j);S_CUTR(g)::S(G)
    • B(j);N_GUARD::S(G)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • R(g);XS(F)::QAR2(B)
      • B(j);XS(F)::QAB(B)
      • Q(i);::QAB(B)
      • R(a);::S(G)
      • R(g);::QAR2(B)
      • S(h);::QAR2(B)
      • S(h);SBLOCK::S(G)
      • P(e);::QAR2(B)
      • P(k);::QAR2(B)
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