MESON Chess Problem Database

Problem Display
PID: 77774 (5n2/3rp3/4pR2/Q1p1kP1p/R2b3B/4N2P/4K1B1/8 w - - 0 1)

Arntz, Hans Valdemar

Illustrated Family Journal, 1888

(First published on Sun May 6 1888)

5n2/3rp3/4pR2/Q1p1kP1p/R2b3B/4N2P/4K1B1/8

#2

9 + 8

15422 Problemskak 2015
23 Die Schwalbe 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sc4#
    • 1...Rc7
      • 2.Qxc7#
    • 1...exf6
      • 2.Bg3#
  • Tries
    • 1.Sg4+?
      • 1...Kf4
        • 2.Qd2#
      • 1...Kd6
        • 2.Qb6#
      • 1...hxg4!
    • 1.Rxe6+?
      • 1...Kf4
        • 2.Re4#
      • 1...Sxe6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sc4#
      • 1...Kf4
        • 2.Sg4#
      • 1...Kd6
        • 2.Bg3#
      • 1...Bxe3
        • 2.Re4#
      • 1...exf6
        • 2.Bg3#
      • 1...c4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);N_SPINP(b),P_SPINP(e),S_FLIGHT::S(C)
    • R(f);N_GUARD::QAB(G),XR(f)
    • P(g);SBLOCK,XR(I)::B(F)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);N_SPINP(b),P_SPINB(a),S_FLIGHT::QAB(G)
        • K(c);N_SPINP(b),P_SPINP(e),S_FLIGHT::QAR2(G)
      • Refutation
        • P(d);XS(C)
    • Try
      • R(I);CHECK,XP(e)
      • Vars
        • K(c);N_SPINP(b),OGATE,P_SPINB(a),S_FLIGHT::R1(I)
      • Refutation
        • S(h);XR(I)
  • Actual
    • Q(G);N_PINP(b)
    • Threat
      • S(C)
    • Vars
      • K(c);P_SPINB(a),S_FLIGHT::QAB(G)+S(C)
      • K(c);P_SPINB(a),P_SPINP(e),S_FLIGHT::B(F)
      • B(a);OGATE,XS(C)::R1(E)
      • P(g);SBLOCK,XR(I)::B(F)
      • P(b);::S(C),XP(b)
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