MESON Chess Problem Database

Problem Display
PID: 16758 (8/1Kp4B/1nN1Q1R1/1p6/1r1r4/N1Bk1qR1/1P4b1/8 w - - 0 1)

Hassberg, Eric Manfred

American Chess Bulletin, 1943

8/1Kp4B/1nN1Q1R1/1p6/1r1r4/N1Bk1qR1/1P4b1/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Rxe3#
      • 2.Qxe3#
    • 1...Qxg3
      • 2.Rxg3#
    • 1...Rd5
      • 2.Sxb4#
    • 1...Bf1
      • 2.Rxf3#
    • 1...Bh3
      • 2.Rxf3#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Rd6#
      • 1...Qxg3
        • 2.Rxg3#
      • 1...Qe3
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...Re4
        • 2.Qd2#
      • 1...Rd5
        • 2.Sxb4#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Bh3
        • 2.Rxf3#
      • 1...Sd5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_SPINQ(c),OGATE,XR(D)::B(I)+R(G),DCHECK,XQ(c)
    • R(e);N_PINS(E)::S(E),XR(d)
    • B(a);N_GUARD::R(D),XQ(c)
  • Actual
    • Q(F);
    • Threat
      • B(I)+R(G)
    • Vars
      • Q(c);N_SPINQ(c),OGATE,XR(D)::B(I)+R(G),DCHECK,XQ(c)
      • R(e);N_PINS(E),SBLOCK::QAR1(F)
      • R(e);N_PINS(E)::S(E),XR(d)
      • R(e);::B(I)+R(G),DCHECK,XR(e)
      • B(a);N_GUARD::R(D),XQ(c)
      • S(g);N_PINS(E)::S(E)
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