MESON Chess Problem Database

Problem Display
PID: 18626 (4K3/1B1R3p/5p2/2prk2P/4PN1R/1nPrp3/b1n3Q1/1q2N3 w - - 0 1)

Wirtanen, Erkki Aukusti

1st Prize, Die Schwalbe TT, 1957

4K3/1B1R3p/5p2/2prk2P/4PN1R/1nPrp3/b1n3Q1/1q2N3

#2

10 + 11

3976 FIDE Album (1956-1958) 1961

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Rxd5#
    • 1...Rd4
      • 2.Sf3#
    • 1...Rd6
      • 2.Sf3#
    • 1...Scd4
      • 2.Rxd5#
    • 1...Sbd4
      • 2.Sexd3#
  • Tries
    • 1.Sfxd3+?
      • 1...Ke6
        • 2.Bxd5#
        • 2.Qg8#
      • 1...Rxd3!
    • 1.Qg5+?
      • 1...Kxe4
        • 2.Se2#
        • 2.Sfg2#
        • 2.Sfxd3#
        • 2.Sh3#
        • 2.Sxd5#
        • 2.Se6#
        • 2.Sg6#
        • 2.Re7#
      • 1...f5
        • 2.Qe7#
        • 2.Qxf5#
      • 1...fxg5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Rxc3
        • 2.Qxd5#
      • 1...Scd4
        • 2.Qxd5#
      • 1...Rd6
        • 2.Sf3#
      • 1...Sbd4
        • 2.Sfxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD,XP(C)::R1(I),XR(h)
    • R(h);::S(A)
    • S(c);S_CUTR(e)::R1(I),XR(h)
    • S(d);S_CUTR(h)::S(A),XR(e)
  • Tries
    • Try
      • S(E);CHECK,XR(e)
      • Refutation
        • R(h);XS(E)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(j);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(i);P-FLIGHT,P_SPINR(h),XP(D)::QAR2(B)
      • R(e);N_GUARD,XP(C)::QAR1(B),XR(h)
      • S(c);S_CUTR(e)::QAR1(B),XR(h)
      • R(h);::S(A)
      • S(d);S_CUTR(h)::S(E),XR(e)
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