MESON Chess Problem Database

Problem Display
PID: 221620 (7r/3n1P2/1B1p2R1/7N/1K1Q2Pk/1p5r/7b/8 w - - 0 1)

Sypniewski, Karol

British Chess Magazine, 1928

7r/3n1P2/1B1p2R1/7N/1K1Q2Pk/1p5r/7b/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qf6#
    • 1...Sxb6
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sb8
      • 2.Qf6#
    • 1...Sf8
      • 2.Bd8#
      • 2.Qf6#
  • Tries
    • 1.Bd8+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Rxd8!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Sf5#
      • 1...Kxg3
        • 2.Qf2#
      • 1...Rxg3
        • 2.Qxh8#
      • 1...Bxg3
        • 2.Qxh8#
      • 1...Rh5
        • 2.gxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD::QAB(B)
    • S(f);N_GUARD,XB(E)::QAB(B)
    • S(f);N_GUARD::QAB(B),XS(f)
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • R(g);XB(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
      • R(c);SBLOCK,XS(D)::QAR(B),XR(g)
      • B(a);SBLOCK,XS(D)::QAR(B),XR(g)
      • R(g);OGATE::QAR(B)+P(C),XR(g)
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