MESON Chess Problem Database

Problem Display
PID: 98545 (8/3PQP1b/3pKp1r/r2p1p2/3p1P2/b6p/3NkN2/2R1B1R1 w - - 0 1)

Petkov, Petko Andonov

Problemas, 1969

8/3PQP1b/3pKp1r/r2p1p2/3p1P2/b6p/3NkN2/2R1B1R1

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Kxd5#
    • 1...Rc5
      • 2.Kxd6#
    • 1...Ra6
      • 2.Kxd5#
    • 1...Ra7
      • 2.Kxd5#
    • 1...Ra8
      • 2.Kxd5#
    • 1...Rh4
      • 2.Kxf6#
    • 1...Rh5
      • 2.Kxf6#
    • 1...Rg6
      • 2.Kxf5#
    • 1...Bxc1
      • 2.Kxd6#
    • 1...Bb2
      • 2.Kxd6#
    • 1...Bc5
      • 2.Kxd5#
    • 1...Bg6
      • 2.Kxf6#
    • 1...Bg8
      • 2.Kxf5#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Kxd5#
        • 2.Kxd6#
      • 1...Rxc5
        • 2.Kxd6#
      • 1...Bxc5
        • 2.Kxd5#
      • 1...dxc5
        • 2.Kxd5#
        • 2.Kd6#
      • 1...Ra6
        • 2.Kxd5#
      • 1...Ke3!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Kxf5#
        • 2.Kxf6#
      • 1...Ke3
        • 2.Kxf5#
      • 1...Rxg6
        • 2.Kxf5#
      • 1...Bxg6
        • 2.Kxf6#
      • 1...Rh5
        • 2.Kxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(e);::QAR(I)+K(G),XP(f)
    • R(e);::QAR(I)+K(G),XP(h)
    • R(j);::QAR(I)+K(G),XP(i)
    • R(j);::QAR(I)+K(G),XP(g)
    • B(b);XR(A)::QAR(I)+K(G),XP(h)
    • B(b);::QAR(I)+K(G),XP(h)
    • B(b);::QAR(I)+K(G),XP(f)
    • B(k);::QAR(I)+K(G),XP(i)
    • B(k);P_PINP(J)::QAR(I)+K(G),XP(g)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(A)::QAR(I)+K(G),XP(h)
        • B(b);XR(A)::QAR(I)+K(G),XP(f)
        • R(e);::QAR(I)+K(G),XP(f)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR(I)+K(G),XP(g)
      • R(j);XR(C)::QAR(I)+K(G),XP(g)
      • B(k);XR(C)::QAR(I)+K(G),XP(i)
      • R(j);::QAR(I)+K(G),XP(i)
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