MESON Chess Problem Database

Problem Display
PID: 30444 (K7/8/2B5/6p1/4Q2n/5n2/4NRr1/5N1k w - - 0 1)

Ellerman, Arnoldo

3rd Prize, Good Companions Meredith Ty., 1919

K7/8/2B5/6p1/4Q2n/5n2/4NRr1/5N1k

#2

6 + 5

3391 Het Half Pin Thema 1924
3364 Solving in Style 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Rh2#
    • 1...Rh2
      • 2.Sfg3#
      • 2.Rxh2#
    • 1...Rg3
      • 2.Sfxg3#
      • 2.Rh2#
    • 1...Rg4
      • 2.Rh2#
    • 1...Sg1
      • 2.Seg3#
    • 1...Sh2
      • 2.Sfg3#
  • Keys
    • 1.Qg4!
      • 1...Rxf2
        • 2.Qg1#
      • 1...Rxg4
        • 2.Rh2#
      • 1...Se1
        • 2.Qh3#
      • 1...Rg1
        • 2.Rh2#
        • 2.Qh3#
        • 2.Qxg1#
      • 1...Rh2
        • 2.Sfg3#
        • 2.Rxh2#
        • 2.Qg1#
      • 1...Rg3
        • 2.Sfxg3#
        • 2.Rh2#
      • 1...Sg1
        • 2.Seg3#
      • 1...Sd2
        • 2.Qh3#
      • 1...Sh2
        • 2.Sfg3#
      • 1...Sd4
        • 2.Qh3#
      • 1...Se5
        • 2.Qh3#
      • 1...Sf5
        • 2.Qxg2#
      • 1...Sg6
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,P_SPINS(c)::R1(C)
    • S(c);P_SPINR(b),SBLOCK::S(B)
    • S(c);P_SPINR(b),SBLOCK::S(A)
  • Actual
    • Q(D);
    • Vars
      • R(b);OGATE,P_SPINS(c),XR(C)::QAR1(D)
      • R(b);OGATE,P_SPINS(c),XQ(D)::R1(C)
      • S(c);N_GUARD,P_SPINR(b)::QAR2(D)
      • S(c);P_SPINR(b),SBLOCK::S(B)
      • S(c);P_SPINR(b),SBLOCK::S(A)
      • S(d);N_GUARD::QAB1(D),XR(b)
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