MESON Chess Problem Database

Problem Display
PID: 245721 (3Q4/1rp2N2/BPpp1P2/2p3R1/3kp1nr/b4b2/1P2R2N/1K6 w - - 0 1)

Wirtanen, Erkki Aukusti

Revista Romana de Sah, 1969

3Q4/1rp2N2/BPpp1P2/2p3R1/3kp1nr/b4b2/1P2R2N/1K6

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rd2#
    • 1...Sxf6
      • 2.Qxf6#
    • 1...cxb6
      • 2.Qxd6#
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Sc4#
        • 2.Sxe4#
        • 2.Sxb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Rxb6
        • 2.Sc4#
        • 2.Sxe4#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Bxb2
        • 2.Sxe4#
      • 1...Bxe2
        • 2.Sc4#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...cxb6
        • 2.Sxb7#
      • 1...cxd6
        • 2.Qxd6#
      • 1...Se5
        • 2.Sf5#
      • 1...c4
        • 2.Sb5#
      • 1...Rh7
        • 2.Sf7#
      • 1...Rh8
        • 2.Se8#
      • 1...Ra7
        • 2.Sc4#
        • 2.Sxe4#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Rb8
        • 2.Sc8#
      • 1...Se3
        • 2.Rd2#
      • 1...e3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::R(C)
    • S(e);OGATE,XP(H)::QAB(J),XS(e)
    • P(k);N_GUARD,XP(G)::QAR2(J),XP(i)
  • Actual
    • S(I);XP(i)
    • Threat
      • DUALS(6)
    • Vars
      • B(a);XP(B)::QAR(J)+S(I),XP(d)
      • B(b);XR(C)::QAR(J)+S(I)
      • S(e);OGATE,XP(H)::QAB(J),XS(e)
      • P(k);XP(G)::QAR(J)+S(I),XR(j)
      • P(k);OGATE,P_SPINP(k),XS(I)::QAR2(J),XP(k)
      • S(e);SBLOCK::QAR(J)+S(I),DCHECK
      • P(g);SBLOCK::QAR(J)+S(I),DCHECK
      • R(f);::QAR(J)+S(I)
      • R(j);::QAR(J)+S(I)
      • S(e);SBLOCK::R(C)
      • P(d);N_GUARD::S(D),XB(b)
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