MESON Chess Problem Database

Problem Display
PID: 6552 (b5n1/K1p5/1pk1PPp1/p1B2NR1/rr1pNP2/1P1p2P1/2q2P2/2R2B1Q w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1931

b5n1/K1p5/1pk1PPp1/p1B2NR1/rr1pNP2/1P1p2P1/2q2P2/2R2B1Q

#2

14 + 12

3098 FIDE Album (1914-1944) (I) 1971
5454 Near Snap 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sxd4#
    • 1...Qb1
      • 2.Sed6#
    • 1...Qa2
      • 2.Sed6#
    • 1...Qb2
      • 2.Sed6#
    • 1...Qd2
      • 2.Sed6#
    • 1...Qxc5
      • 2.Sed6#
    • 1...bxc5
      • 2.Sc3#
      • 2.Sed6#
  • Tries
    • 1.Be7?
      • threat
        • 2.Sc3#
      • 1...Kb5
        • 2.Sxd4#
      • 1...Kd5
        • 2.Sc5#
      • 1...Sxe7
        • 2.Sxe7#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qc4
        • 2.Sxd4#
      • 1...Qc5
        • 2.Sed6#
      • 1...Rb5
        • 2.Sc5#
      • 1...d2
        • 2.Sxd2#
      • 1...Sxf6!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Sc3#
      • 1...Kb5
        • 2.Sxd4#
      • 1...Kd5
        • 2.Sc5#
      • 1...Sxf6
        • 2.Se7#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qc4
        • 2.Sxd4#
      • 1...Qc5
        • 2.Sed6#
      • 1...Rb5
        • 2.Sc5#
      • 1...Se7
        • 2.Sxe7#
      • 1...d2
        • 2.Sxd2#

This anticipates 35807(1975)

There are these versions: 148379

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • K(h);S_FLIGHT::R(K)+S(J),XP(e)
    • Q(a);::QAB(C)+S(G)
    • Q(a);P_SPINQ(a),XB(I)::QAB(C)+S(G)
  • Tries
    • Try
      • B(I);P_PINQ(a)
      • Threat
        • QAB(C)+S(G)
      • Vars
        • K(h);N_SPINQ(a),P_SPINP(b),S_FLIGHT::R(K)+S(J),DCHECK,XP(e)
        • K(h);N_SPINQ(a),S_FLIGHT::QAB(C)+S(G)
        • S(l);XB(I)::S(J),XS(l)
        • Q(a);::QAB(C)+S(G),XQ(a)
        • Q(a);S_CUTR(d)::S(J),XP(e)
        • Q(a);::QAB(C)+S(G)
        • R(d);SBLOCK::QAB(C)+S(G)
        • P(b);::QAB(C)+S(G),XP(b)
      • Refutation
        • S(l);XP(M)
  • Actual
    • B(I);P_PINQ(a)
    • Threat
      • QAB(C)+S(G)
    • Vars
      • K(h);N_SPINQ(a),P_SPINP(b),S_FLIGHT::R(K)+S(J),DCHECK,XP(e)
      • K(h);N_SPINQ(a),S_FLIGHT::QAB(C)+S(G)
      • S(l);N_GUARD,XP(M)::S(J)
      • Q(a);::QAB(C)+S(G),XQ(a)
      • Q(a);S_CUTR(d)::S(J),XP(e)
      • Q(a);::QAB(C)+S(G)
      • R(d);SBLOCK::QAB(C)+S(G)
      • S(l);N_GUARD::S(J),XS(l)
      • P(b);::QAB(C)+S(G),XP(b)
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