MESON Chess Problem Database

Problem Display
PID: 238113 (R7/3K4/1p1PP3/1k3NBR/3P4/PNpP1p2/4r3/1Q5r w - - 0 1)

Hermanson, Halvar

Arbejder-Skak, 1962

R7/3K4/1p1PP3/1k3NBR/3P4/PNpP1p2/4r3/1Q5r

#2

12 + 6

15148 Sadier Collection 2021
3713 Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rhh2
      • 2.Sd2#
    • 1...Rh3
      • 2.Sd2#
    • 1...Rh4
      • 2.Sd2#
    • 1...Rxh5
      • 2.Sd2#
    • 1...Re1
      • 2.Sc1#
    • 1...Re3
      • 2.Sc1#
    • 1...Re4
      • 2.Sc1#
    • 1...Re5
      • 2.Sc1#
    • 1...Rxe6
      • 2.Sc1#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Sd2#
      • 1...Rxc1
        • 2.Se3#
      • 1...Ra2
        • 2.Sh4#
      • 1...Rb2
        • 2.Sh4#
      • 1...Rc2
        • 2.Sh4#
      • 1...Rd2
        • 2.Sxd2#
        • 2.Sh4#
      • 1...c2!
    • 1.Be3?
      • threat
        • 2.Sh4#
      • 1...Rxh5
        • 2.Sd2#
      • 1...Rxe3
        • 2.Sc1#
      • 1...Rg1
        • 2.Sg3#
      • 1...Rh4
        • 2.Sd2#
        • 2.Sxh4#
      • 1...Rg2!
    • 1.Bh4?
      • threat
        • 2.Se3#
      • 1...Rxh4
        • 2.Sd2#
      • 1...Rxe6
        • 2.Sc1#
      • 1...Rg2
        • 2.Sg3#
      • 1...Re3
        • 2.Sc1#
        • 2.Sxe3#
      • 1...Re4
        • 2.Sc1#
      • 1...Re5
        • 2.Sc1#
      • 1...Rg1!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sc1#
      • 1...Rxb1
        • 2.Se3#
      • 1...Rxd2
        • 2.Sh4#
      • 1...Rc1
        • 2.Sxc1#
        • 2.Se3#
      • 1...c2
        • 2.a4#

This anticipates 168402(2008)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::QAR(A)+S(C)
    • R(a);N_GUARD,XR(H)::QAR(A)+S(C)
    • R(b);N_GUARD::QAR(A)+S(C)
    • R(b);N_GUARD,XP(J)::QAR(A)+S(C)
  • Tries
    • Try
      • B(G);
      • Threat
        • QAR(A)+S(C)
      • Vars
        • R(a);N_GUARD,XB(G)::R(H)+S(F)
        • R(b);N_GUARD::R(H)+S(F)
      • Refutation
        • P(c);
    • Try
      • B(G);
      • Threat
        • R(H)+S(F)
      • Vars
        • R(a);N_GUARD,XR(H)::QAR(A)+S(C)
        • R(b);N_GUARD,XB(G)::QAR(A)+S(C)
        • R(a);N_GUARD::R(H)+S(F)
      • Refutation
        • R(b);
    • Try
      • B(G);
      • Threat
        • R(H)+S(F)
      • Vars
        • R(a);N_GUARD,XB(G)::QAR(A)+S(C)
        • R(b);N_GUARD,XP(J)::QAR(A)+S(C)
        • R(b);N_GUARD::R(H)+S(F)
        • R(b);N_GUARD::QAR(A)+S(C)
      • Refutation
        • R(a);
  • Actual
    • B(G);
    • Threat
      • QAR(A)+S(C)
    • Vars
      • R(a);N_GUARD,XQ(A)::R(H)+S(F)
      • R(b);N_GUARD,XB(G)::R(H)+S(F)
      • P(c);::P(B)
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