MESON Chess Problem Database

Problem Display
PID: 179721 (2R3b1/7B/5r1q/R2p2b1/1N1k3N/1Kp3Q1/nn6/2r5 w - - 0 1)

Kopnin, Aleksey Grigorevich

Chelyabinsky raboci, 1977

2R3b1/7B/5r1q/R2p2b1/1N1k3N/1Kp3Q1/nn6/2r5

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sc2#
    • 1...Rb1
      • 2.Sc2#
    • 1...Rd1
      • 2.Sc2#
    • 1...Re1
      • 2.Sc2#
    • 1...Rcf1
      • 2.Sc2#
    • 1...Rg1
      • 2.Sc2#
    • 1...Rh1
      • 2.Sc2#
    • 1...Rc2
      • 2.Sxc2#
    • 1...Re6
      • 2.Rxd5#
    • 1...Rf7
      • 2.Rxd5#
    • 1...Be6
      • 2.Sc6#
  • Keys
    • 1.Re8!
      • threat
        • 2.Qe5#
      • 1...Re1
        • 2.Sc2#
      • 1...Rf4
        • 2.Qe3#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Re6
        • 2.Rxd5#
      • 1...Bf4
        • 2.Sf3#
      • 1...Be6
        • 2.Sc6#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(C)
    • R(a);N_GUARD::S(C),XR(a)
    • R(h);S_CUTB(j)::R1(E),XP(f)
    • B(j);S_CUTR(h)::S(C)
  • Actual
    • R(G);
    • Threat
      • QAB1(B)
    • Vars
      • R(a);N_GUARD::S(C)
      • R(h);S_CUTB(g)::QAB1(B)
      • R(h);N_GUARD::S(D),XR(h)
      • R(h);S_CUTB(j)::R1(E),XP(f)
      • B(g);S_CUTR(h)::S(D)
      • B(j);S_CUTR(h)::S(C)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • S(c);N_GUARD::QAR1(B)
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