MESON Chess Problem Database

Problem Display
PID: 96337 (2Nr1n2/b5r1/5R2/N1pk4/3p1P2/2R2Kp1/7p/7Q w - - 0 1)

Colacrai, N

Problemas, 1966

2Nr1n2/b5r1/5R2/N1pk4/3p1P2/2R2Kp1/7p/7Q

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Se7#
    • 1...Rg5
      • 2.Se7#
    • 1...Rg6
      • 2.Se7#
    • 1...Rb7
      • 2.Kxg3#
    • 1...Rc7
      • 2.Kxg3#
    • 1...Rgd7
      • 2.Kxg3#
    • 1...Re7
      • 2.Sxe7#
    • 1...Rf7
      • 2.Kxg3#
    • 1...Rh7
      • 2.Kxg3#
    • 1...Rg8
      • 2.Se7#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Re8
      • 2.Rd6#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bb8
      • 2.Sb6#
    • 1...Se6
      • 2.Rf5#
    • 1...Sg6
      • 2.Kxg3#
    • 1...Sd7
      • 2.Rd6#
    • 1...dxc3
      • 2.Qd1#
    • 1...d3
      • 2.Rxd3#
  • Keys
    • 1.Re3!
      • threat
        • 2.Re5#
        • 2.Rf5#
      • 1...Rxc8
        • 2.Re5#
      • 1...dxe3
        • 2.Qd1#
      • 1...d3
        • 2.Rxd3#
      • 1...Rg5
        • 2.Se7#
      • 1...Re7
        • 2.Sxe7#
      • 1...Rf7
        • 2.Kxg3#
        • 2.Re5#
      • 1...Re8
        • 2.Rd6#
      • 1...Bb8
        • 2.Sb6#
      • 1...Sg6
        • 2.Kxg3#
      • 1...Sd7
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • R(g);N_GUARD::S(G)
    • R(g);::QAB(A)+K(C),XP(b)
    • R(g);N_GUARD::S(G),XR(g)
    • R(h);N_GUARD::R1(F),XR(h)
    • R(h);N_GUARD::R1(F)
    • B(f);N_GUARD::S(G),XB(f)
    • B(f);N_GUARD::S(G)
    • S(i);SBLOCK::R(F)
    • S(i);::QAB(A)+K(C),XP(b)
    • S(i);S_CUTR(h)::R1(F)
    • P(c);OGATEB,XR(B)::QAR(A)
    • P(c);OGATEB::R(B),XP(c)
  • Actual
    • R(B);
    • Threat
      • DUALS(2)
    • Vars
      • R(h);XS(G)::R1(B)
      • P(c);OGATEB,XR(B)::QAR(A)
      • P(c);OGATEB::R(B),XP(c)
      • R(g);N_GUARD::S(G)
      • R(g);N_GUARD::S(G),XR(g)
      • R(h);N_GUARD::R1(F)
      • B(f);N_GUARD::S(G)
      • S(i);::QAB(A)+K(C),XP(b)
      • S(i);S_CUTR(h)::R1(F)
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