MESON Chess Problem Database

Problem Display
PID: 245381 (nK1N1B2/1Bp5/5p2/4k1p1/3p2p1/4r3/b4R2/7Q w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Revista Romana de Sah, 1984

nK1N1B2/1Bp5/5p2/4k1p1/3p2p1/4r3/b4R2/7Q

#2

6 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qxe1#
    • 1...Ra3
      • 2.Qe4#
    • 1...Rb3
      • 2.Qe4#
      • 2.Qd5#
    • 1...Rc3
      • 2.Qe4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Rg3
      • 2.Qe4#
    • 1...Rh3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Bb1
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be6
      • 2.Sc6#
    • 1...d3
      • 2.Qa1#
    • 1...f5
      • 2.Qh8#
  • Tries
    • 1.Qh2+?
      • 1...Rg3
        • 2.Qxg3#
      • 1...g3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxf6#
      • 1...Rf3
        • 2.Qe4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Be6
        • 2.Qxe6#
      • 1...f5
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(b);OGATEB::QAR(A),XR(b)
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • B(a);N_GUARD::QAR1(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • B(a);SBLOCK::S(E)
    • P(c);OGATEB::QAB(A)
    • P(g);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB(A),XR(b)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(g)
    • Vars
      • R(b);N_GUARD::QAR1(A)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • P(g);OGATEB::B(F)
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