MESON Chess Problem Database

Problem Display
PID: 176077 (7B/3K4/2p5/2Nk1p1R/1P1N4/2Pq4/8/5B2 w - - 0 1)

Tschirschwitz, Herbert

Schach-Echo, 1936

7B/3K4/2p5/2Nk1p1R/1P1N4/2Pq4/8/5B2

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.c4#
    • 1...Qc4
      • 2.Bg2#
      • 2.Rxf5#
    • 1...Qe4
      • 2.c4#
    • 1...Qb5
      • 2.Rxf5#
    • 1...Qa6
      • 2.Rxf5#
    • 1...Qd1
      • 2.Rxf5#
      • 2.c4#
    • 1...Qd2
      • 2.Rxf5#
      • 2.c4#
    • 1...Qxc3
      • 2.Rxf5#
    • 1...Qe3
      • 2.c4#
    • 1...Qf3
      • 2.c4#
    • 1...Qg3
      • 2.c4#
    • 1...Qh3
      • 2.c4#
  • Tries
    • 1.c4+?
      • 1...Qxc4
        • 2.Bg2#
        • 2.Rxf5#
      • 1...Kxc4!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Se3#
      • 1...Kc4+
        • 2.Sd6#
      • 1...Qxf5+
        • 2.Rxf5#
      • 1...Qe3
        • 2.Sxe3#
        • 2.Se7#
        • 2.c4#
      • 1...Qh3
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::P(B)
    • Q(a);N_GUARD::R(F),XP(c)
    • Q(a);N_GUARD,XP(B)::R(F),XP(c)
  • Tries
    • Try
      • P(B);CHECK
      • Refutation
        • K(b);N_SPINP(c),P_PINS(D),P_SPINQ(a),S_FLIGHT,XP(B)
  • Actual
    • S(D);XP(c)
    • Threat
      • R(F)+S(D),DCHECK
    • Vars
      • K(b);CHECK,P_SPINQ(a),S_FLIGHT::S(D)
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(D)::R(F),XQ(a)
      • Q(a);N_GUARD,P_PINS(D)::P(B)
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