MESON Chess Problem Database

Problem Display
PID: 87801 (8/p3r3/8/KQ2PpbB/3Bk3/1p4rp/3pN3/5R2 w - - 0 1)

Simansky, AC

The Problemist, 1930

8/p3r3/8/KQ2PpbB/3Bk3/1p4rp/3pN3/5R2

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Bf3#
    • 1...Rg2
      • 2.Bf3#
    • 1...Rd3
      • 2.Qc6#
    • 1...Rf3
      • 2.Bxf3#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Bh4
      • 2.Rf4#
    • 1...Bf6
      • 2.Rf4#
    • 1...f4
      • 2.Bg6#
  • Tries
    • 1.e6?
      • threat
        • 2.Qxf5#
      • 1...Rf3
        • 2.Bxf3#
      • 1...Bf4
        • 2.Rxf4#
      • 1...f4
        • 2.Bg6#
      • 1...Rf7!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sxg3#
      • 1...Rxe5+
        • 2.Bc5#
      • 1...f4
        • 2.Bg6#
      • 1...Rg1
        • 2.Sc3#
        • 2.Bf3#
      • 1...Rg2
        • 2.Sc3#
        • 2.Bf3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rd3
        • 2.Qc6#
      • 1...Re3
        • 2.Ba1#
        • 2.Bb2#
        • 2.Bc3#
      • 1...Rf3
        • 2.Bxf3#
      • 1...Rg4
        • 2.Sc3#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Bh4
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::B(G)
    • R(c);SBLOCK::QAB(E)
    • R(c);N_GUARD::B(G),XR(c)
    • B(g);N_GUARD::R1(A),XB(g)
    • B(g);N_GUARD::R1(A)
    • P(f);OGATEB::B(G)
  • Tries
    • Try
      • P(F);
      • Threat
        • QAB1(E),XP(f)
      • Vars
        • R(c);N_GUARD::B(G),XR(c)
        • B(g);N_GUARD::R1(A),XB(g)
        • P(f);OGATEB::B(G)
      • Refutation
        • R(i);
  • Actual
    • Q(E);
    • Threat
      • S(B),XR(c)
    • Vars
      • R(i);CHECK,SBLOCK,XP(F)::QAR(E)+B(C)
      • P(f);OGATEB::B(G)
      • R(c);N_GUARD::S(B),XR(c)
      • R(c);SBLOCK::QAB(E)
      • R(c);N_GUARD::B(G),XR(c)
      • R(c);N_GUARD::S(B)
      • B(g);N_GUARD::R1(A),XB(g)
      • B(g);N_GUARD::R1(A)
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