MESON Chess Problem Database

Problem Display
PID: 24901 (1q2RN2/2rB1p1p/5k1B/p5p1/5p1N/4P3/rb2Q2K/1bn5 w - - 0 1)

Kubbel, Evgeny Ivanovich

Kagans Neueste Schachnachrichten, 1921

1q2RN2/2rB1p1p/5k1B/p5p1/5p1N/4P3/rb2Q2K/1bn5

#2

8 + 12

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Sxh7#
    • 1...Rxd7
      • 2.Sxd7#
    • 1...Sd3
      • 2.Sxh7#
  • Keys
    • 1.exf4!
      • threat
        • 2.Qe7#
        • 2.fxg5#
      • 1...Qxe8
        • 2.fxg5#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Sxe2
        • 2.fxg5#
      • 1...gxf4
        • 2.Qe7#
      • 1...gxh4
        • 2.Qe7#
      • 1...Qb4
        • 2.fxg5#
      • 1...Qb5
        • 2.Qe7#
      • 1...Qd8
        • 2.fxg5#
      • 1...Rc2
        • 2.Sxh7#
      • 1...Rc3
        • 2.Qe7#
      • 1...Rc4
        • 2.Qe7#
      • 1...Rc5
        • 2.Qe7#
      • 1...Rc6
        • 2.Qe7#
      • 1...Ra7
        • 2.Qe7#
      • 1...Rb7
        • 2.Qe7#
      • 1...Rc8
        • 2.Qe7#
      • 1...Be4
        • 2.fxg5#
      • 1...Ba1
        • 2.fxg5#
      • 1...Ba3
        • 2.fxg5#
      • 1...Bc3
        • 2.fxg5#
      • 1...Bd4
        • 2.fxg5#
      • 1...Be5
        • 2.fxe5#
      • 1...g4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 1
  • Sets
    • R(i);P_PINQ(A),S_CUTB(a)::S(H),XP(k)
    • R(i);XB(F)::S(H),XR(i)
    • S(b);S_CUTB(a)::S(H),XP(k)
  • Actual
    • P(C);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • Q(l);XR(G)::P(C),XP(g)
      • R(i);P_PINP(C),XB(F)::S(H),XR(i)
      • S(b);XQ(A)::P(C),XP(g)
      • P(g);XP(C)::QAB1(A)
      • P(g);XS(D)::QAB1(A)
      • Q(l);::P(C),XP(g)
      • Q(l);::QAB1(A)
      • R(i);P_PINP(C),P_PINQ(A),S_CUTB(a)::S(H),XP(k)
      • R(i);P_PINP(C)::QAB1(A)
      • B(a);::P(C),XP(g)
      • B(d);P_PINQ(A)::P(C),XP(g)
      • B(d);OGATE,P_PINP(C),P_PINQ(A)::P(C),XB(d)
      • P(g);::QAB1(A)
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