MESON Chess Problem Database

Problem Display
PID: 6527 (K2b4/3p1r2/pQnR3B/4q2B/8/2n1NPp1/2Ppk3/1b4RN w - - 0 1)

Golubev, Giorgi P

1st Prize, Die Schwalbe, 1931

K2b4/3p1r2/pQnR3B/4q2B/8/2n1NPp1/2Ppk3/1b4RN

#2

10 + 11

5862 An ABC of Chess Problems 1970
3098 FIDE Album (1914-1944) (I) 1971
4640 Chess Wizardry: The New ABC of Chess Problems 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.f4#
    • 1...Qf6
      • 2.f4#
    • 1...Qh8
      • 2.f4#
    • 1...Qxe3
      • 2.Qxe3#
    • 1...Qe7
      • 2.f4#
    • 1...Qe8
      • 2.f4#
    • 1...Bg5
      • 2.f4#
    • 1...Sd5
      • 2.Qxa6#
  • Tries
    • 1.Sxg3+?
      • 1...Kf2
        • 2.Sd1#
      • 1...Qxg3!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Rxd2#
      • 1...Qxd6
        • 2.Sxc3#
        • 2.Qe3#
        • 2.f4#
      • 1...Qxh5
        • 2.Qe3#
      • 1...Qd4
        • 2.Sxg3#
        • 2.f4#
      • 1...Qf4
        • 2.Sxc3#
      • 1...Qe3
        • 2.Sxg3#
        • 2.Qxe3#
      • 1...Qd5
        • 2.Sxc3#
        • 2.Sxg3#
        • 2.Qe3#
      • 1...Qg5
        • 2.Sxc3#
      • 1...Rf4
        • 2.Sxg3#
      • 1...Bg5
        • 2.f4#
      • 1...Se4
        • 2.Qe3#
      • 1...Sd5
        • 2.Qxa6#
      • 1...Sd4
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD,XR(H)::B(F)+P(E)
    • Q(f);N_GUARD::B(F)+P(E)
    • Q(f);OGATE,XS(D)::QAR1(G),XQ(f)
    • B(k);S_CUTQ(f)::B(F)+P(E)
    • S(d);N_GUARD,S_CUTQ(f)::QAB(G),XP(g)
  • Tries
    • Try
      • S(B);CHECK,XP(e)
      • Vars
        • K(c);P-FLIGHT::QAB(G)+S(D),DCHECK
      • Refutation
        • Q(f);XS(B)
  • Actual
    • S(D);
    • Threat
      • R1(H),XP(b)
    • Vars
      • Q(f);N_GUARD,XB(F)::QAR1(G)
      • Q(f);N_GUARD::S(D),XS(d)
      • R(j);S_CUTQ(f)::S(B),XP(e)
      • B(k);S_CUTQ(f)::B(F)+P(E)
      • S(d);S_CUTQ(f)::QAR1(G)
      • S(d);N_GUARD,S_CUTQ(f)::QAB(G),XP(g)
      • S(h);S_CUTQ(f)::S(D),XS(d)
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