MESON Chess Problem Database

Problem Display
PID: 11086 (8/5P1K/8/5BBQ/rnbN1b2/2P1k3/1R1N1p2/3rnq2 w - - 0 1)

Herpai, S Ferenc

1st Prize, Die Schwalbe, 1936

8/5P1K/8/5BBQ/rnbN1b2/2P1k3/1R1N1p2/3rnq2

#2

9 + 9

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

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Sxc4#
    • 1...Qh3
      • 2.Sxc4#
    • 1...Qg1
      • 2.Sxc4#
    • 1...Qh1
      • 2.Sxc4#
    • 1...Ba2
      • 2.Sxf1#
    • 1...Bb3
      • 2.Sxf1#
    • 1...Bd5
      • 2.Sxf1#
    • 1...Be6
      • 2.Sxf1#
    • 1...Bxf7
      • 2.Sxf1#
    • 1...Bxg5
      • 2.Qxg5#
    • 1...Sg2
      • 2.Qf3#
      • 2.Qh3#
    • 1...Sed3
      • 2.Sxc4#
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sbd3
      • 2.Sxf1#
  • Tries
    • 1.Qh3+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Qxh3+!
    • 1.Qh4?
      • threat
        • 2.Bxf4#
        • 2.Qxf4#
      • 1...Bxg5
        • 2.Qxg5#
        • 2.Qe4#
      • 1...Qh3
        • 2.Sxc4#
        • 2.Bxf4#
      • 1...Qh1
        • 2.Sxc4#
        • 2.Bxf4#
      • 1...Sg2
        • 2.Qg3#
        • 2.Qh3#
      • 1...Sed3
        • 2.Sxc4#
        • 2.Qg3#
      • 1...Sbd3
        • 2.Sxf1#
      • 1...Sd5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Bxf4#
      • 1...Bxg5
        • 2.Qxg5#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sg2
        • 2.Qh3#
      • 1...Sed3
        • 2.Sxc4#
      • 1...Sbd3
        • 2.Sxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_GUARD::S(B),XB(h)
    • Q(c);N_GUARD,P_PINQ(G)::S(B),XB(h)
    • B(h);N_GUARD::S(B),XQ(c)
    • B(h);N_GUARD,XP(H)::S(B),XQ(c)
    • B(i);N_SPINB(i),OGATE,XB(F)::QAB(G),XB(i)
    • S(b);N_GUARD::QAR1(G),XS(b)
    • S(g);S_CUTB(h)::S(B),XQ(c)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(G),XS(b)
      • Refutation
        • Q(c);CHECK,XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);S_CUTB(h)::S(B),XQ(c)
      • Refutation
        • S(g);
  • Actual
    • Q(G);
    • Threat
      • B(F),XB(i)
    • Vars
      • B(i);OGATE,XB(F)::QAB(G),XB(i)
      • S(g);S_CUTB(h)::QAR(G)
      • S(b);N_GUARD,S_CUTQ(c)::QAR(G)
      • S(b);S_CUTQ(c)::S(B),XB(h)
      • S(g);S_CUTB(h)::S(B),XQ(c)
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