MESON Chess Problem Database

Problem Display
PID: 241350 (b6r/3N1RBp/Rq1pk1Pp/5p2/1b1Q4/5N2/6B1/6K1 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1937

b6r/3N1RBp/Rq1pk1Pp/5p2/1b1Q4/5N2/6B1/6K1

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4+
      • 2.Sxd4#
    • 1...Qc7
      • 2.Qe5#
    • 1...Qd8
      • 2.Qe5#
    • 1...Qb7
      • 2.Qe5#
    • 1...Qb8
      • 2.Qe5#
    • 1...Rf8
      • 2.Sxf8#
    • 1...f4
      • 2.Bh3#
    • 1...h5
      • 2.Sg5#
  • Keys
    • 1.Bf8!
      • threat
        • 2.Re7#
      • 1...Qxd4+
        • 2.Sxd4#
      • 1...Rxf8
        • 2.Sxf8#
      • 1...Qd8
        • 2.Qe5#
      • 1...f4
        • 2.Bh3#
      • 1...d5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(c);CHECK,P_SPINP(d),XQ(D)::S(C),XQ(c)
    • Q(c);N_PINQ(D),P_SPINP(d)::QAR1(D)
    • R(i);N_GUARD::S(G),XR(i)
    • P(b);OGATEB::B(B)
    • P(f);N_GUARD::S(C)
  • Actual
    • B(I);
    • Threat
      • R1(H)
    • Vars
      • Q(c);CHECK,P_SPINP(d),XQ(D)::S(C),XQ(c)
      • R(i);XB(I)::S(G),XR(i)
      • Q(c);N_PINQ(D),P_SPINP(d)::QAR1(D)
      • P(b);OGATEB::B(B)
      • P(d);P_SPINQ(c),SBLOCK,S_CUTB(h)::QAR(D)
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