MESON Chess Problem Database

Problem Display
PID: 193630 (3K4/2n5/1N2p2N/2P1k3/3p2Rp/8/1qP2B2/8 w - - 0 1)

Schiffer, Vincenz

Neuigkeits Weltblatt, 1915

3K4/2n5/1N2p2N/2P1k3/3p2Rp/8/1qP2B2/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sd7#
    • 1...Qc1
      • 2.Bxd4#
    • 1...Qa3
      • 2.Bxd4#
    • 1...Qb1
      • 2.Bxd4#
    • 1...Qa2
      • 2.Bxd4#
    • 1...Qxc2
      • 2.Bxd4#
    • 1...Qb3
      • 2.Bxd4#
    • 1...Qb5
      • 2.Bxd4#
    • 1...Sd5
      • 2.Sd7#
  • Tries
    • 1.Sc4+?
      • 1...Kf6
        • 2.Bxh4#
      • 1...Kd5!
    • 1.Bg3+?
      • 1...Kf6
        • 2.Sd7#
      • 1...hxg3!
  • Keys
    • 1.c4!
      • threat
        • 2.Sd7#
      • 1...Kf6
        • 2.Sd7#
      • 1...Qxb6
        • 2.Bxd4#
      • 1...dxc4 ep
        • 2.Bd4#
      • 1...Qb5
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • K(d);S_FLIGHT::S(E)
    • Q(a);N_GUARD::B(B),XP(b)
    • Q(a);N_GUARD,XP(A)::B(B),XP(b)
    • S(f);SBLOCK::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);S_FLIGHT::B(B),XP(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(d);S_FLIGHT::S(E)
      • Refutation
        • P(c);XB(B)
  • Actual
    • P(A);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT::S(E)
      • Q(a);N_GUARD,XS(E)::B(B),XP(b)
      • P(b);EP,S_CUTQ(a),XP(A)::B(B)
      • Q(a);N_GUARD::B(B),XP(b)
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