MESON Chess Problem Database

Problem Display
PID: 138282 (5K2/B3pp2/3p1Q1p/4q3/2nN4/3r1P1B/Rb1R1N1p/6kr w - - 0 1)

Ponomarev, Rashid Garifovich

9th Place, 01. USSR Championship, 1946-1947

5K2/B3pp2/3p1Q1p/4q3/2nN4/3r1P1B/Rb1R1N1p/6kr

#2

9 + 11

14752 Soviet Chess Compositions (1945-1947) 1949
5007 Zadachi i Etyudi 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Se2#
    • 1...Qf4
      • 2.Se2#
    • 1...Qxf6
      • 2.Se2#
    • 1...Qe1
      • 2.Qg7#
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qa5
      • 2.Se2#
    • 1...Qb5
      • 2.Se2#
    • 1...Qd5
      • 2.Se2#
    • 1...Qf5
      • 2.Se2#
    • 1...Qg5
      • 2.Se2#
    • 1...Qh5
      • 2.Se2#
    • 1...Rxf3
      • 2.Sxf3#
  • Tries
    • 1.Qxe5?
      • threat
        • 2.Se2#
        • 2.Qg3#
        • 2.Qg7#
        • 2.Qe1#
      • 1...Rxd2
        • 2.Qg3#
        • 2.Qe1#
      • 1...Rxf3
        • 2.Se2#
        • 2.Sxf3#
        • 2.Qe1#
      • 1...Rxd4
        • 2.Qg3#
        • 2.Qe1#
      • 1...Bxd4
        • 2.Qg3#
        • 2.Qe1#
      • 1...Sxd2
        • 2.Se2#
        • 2.Qg3#
      • 1...Sxe5
        • 2.Se2#
      • 1...dxe5
        • 2.Se2#
      • 1...Re3
        • 2.Qg3#
        • 2.Qg7#
      • 1...Sb6
        • 2.Qg3#
        • 2.Qg7#
        • 2.Qe1#
      • 1...f6
        • 2.Se2#
        • 2.Qg3#
        • 2.Qe1#
      • 1...Se3!
    • 1.Qg5+?
      • 1...Qg3
        • 2.Se2#
        • 2.Qxg3#
      • 1...Qxg5
        • 2.Se2#
      • 1...hxg5!
    • 1.Qg7+?
      • 1...Qg3
        • 2.Se2#
        • 2.Qxg3#
      • 1...Qg5
        • 2.Se2#
      • 1...Qxg7+!
    • 1.Qg6+?
      • 1...Qg3
        • 2.Se2#
        • 2.Qxg3#
      • 1...Qg5
        • 2.Se2#
      • 1...fxg6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Se2#
      • 1...Qxd4
        • 2.Qg7#
      • 1...Rxd4
        • 2.Rd1#
      • 1...Bxd4
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • Q(g);N_GUARD::S(F)
    • Q(g);N_GUARD,XQ(G)::S(F)
    • Q(g);N_GUARD::QAR(G)
    • Q(g);N_GUARD::S(F),XQ(g)
    • R(e);XP(D)::S(F),XR(e)
  • Tries
    • Try
      • Q(G);XQ(g)
      • Threat
        • DUALS(4)
      • Vars
        • S(f);XQ(G)::S(F)
        • P(h);XQ(G)::S(F)
      • Refutation
        • S(f);
    • Try
      • Q(G);CHECK
      • Vars
        • Q(g);XQ(G)::S(F)
      • Refutation
        • P(i);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::S(F)
      • Refutation
        • Q(g);CHECK,XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::S(F)
      • Refutation
        • P(k);XQ(G)
  • Actual
    • S(C);
    • Threat
      • B(H)+S(F),DCHECK
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XS(F)::QAR(G)
      • R(e);N_GUARD,P_SPINR(e),XS(F)::R(B)
      • B(c);N_GUARD,P_SPINB(c),XS(F)::R(A)
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