MESON Chess Problem Database

Problem Display
PID: 17507 (K1N5/nN5Q/3p1p2/5P2/2BBkbrR/2P5/7q/5R1b w - - 0 1)

Hassberg, Eric Manfred

6th Prize, Home News, 1947

K1N5/nN5Q/3p1p2/5P2/2BBkbrR/2P5/7q/5R1b

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sbxd6#
      • 2.Scxd6#
    • 1...Rg2
      • 2.Sbxd6#
      • 2.Scxd6#
    • 1...Rg3
      • 2.Sbxd6#
      • 2.Scxd6#
      • 2.Rfxf4#
      • 2.Rhxf4#
    • 1...Rg5
      • 2.Sbxd6#
      • 2.Scxd6#
    • 1...Rg6
      • 2.Sbxd6#
      • 2.Scxd6#
    • 1...Rg7
      • 2.Sbxd6#
      • 2.Scxd6#
    • 1...Rg8
      • 2.Sxd6#
    • 1...d5
      • 2.Sc5#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Se7#
      • 1...Kxd3!
    • 1.Qe7+?
      • 1...Be5
        • 2.Sbxd6#
        • 2.Scxd6#
      • 1...Kxf5!
    • 1.Qf7?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Kxf5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Sxd6#
      • 1...Rxg8
        • 2.Sxd6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);P_PINS(J),P_SPINB(d)::S(G),XP(f)
    • P(f);N_GUARD::S(G)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);S_FLIGHT::S(J)
      • Refutation
        • K(c);P_PINS(G),S_FLIGHT,XB(C)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(c);P_PINS(G),P_SPINB(d),S_FLIGHT,XP(F)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • P(f);::QAB1(H),XP(f)
      • Refutation
        • K(c);P_PINS(G),P_SPINB(d),P_SPINP(g),S_FLIGHT,XP(F)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • K(c);P_PINS(G),P_SPINB(d),S_FLIGHT,XP(F)::S(J),XP(f)
      • R(e);P_PINS(J),P_SPINB(d),XQ(H)::S(G),XP(f)
      • P(f);::QAB1(H),XP(f)
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