MESON Chess Problem Database

Problem Display
PID: 64228 (4N3/3Q2pq/2p1B3/Rnb1kbrR/4P3/2r1PpPp/1n2PN1K/B7 w - - 0 1)

Myllyniemi, Matti Arvo

1st Prize, Suomen Shakki, 1979

4N3/3Q2pq/2p1B3/Rnb1kbrR/4P3/2r1PpPp/1n2PN1K/B7

#2

12 + 12

117 Suomen Shakki 1981
3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Rxf5#
    • 1...Bxe3
      • 2.Qd6#
    • 1...Bd4
      • 2.Qd6#
      • 2.exd4#
    • 1...Bb6
      • 2.Qd6#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Ba7
      • 2.Qd6#
    • 1...Bxe4
      • 2.Sg4#
    • 1...Sa3
      • 2.Qd6#
    • 1...Sd4
      • 2.Qd6#
      • 2.exd4#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Qd6#
      • 1...cxb5
        • 2.Qd5#
      • 1...Sc4
        • 2.Bxc3#
        • 2.Rxc5#
      • 1...Rd3!
    • 1.Qxc6?
      • threat
        • 2.Qd5#
      • 1...Bxe4
        • 2.Sg4#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Sc7
        • 2.Qd6#
      • 1...Bxe6!
  • Keys
    • 1.exf3!
      • threat
        • 2.f4#
      • 1...Bxe3
        • 2.Qd6#
      • 1...Rg4
        • 2.Sxg4#
      • 1...Sd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(i);OGATE,P_SPINB(h)::R1(I),XB(h)
    • B(f);N_GUARD,P_SPINS(e),XP(E)::QAB1(K)
    • B(f);N_GUARD,P_SPINS(e)::QAB1(K)
    • B(f);N_GUARD,P_SPINS(e)::QAB1(K),XB(f)
    • B(h);N_GUARD,P_SPINR(i),SBLOCK,XP(G)::S(C)
    • S(e);N_GUARD,P_SPINB(f)::QAB1(K)
    • S(e);N_GUARD,P_SPINB(f)::QAB1(K),XS(e)
  • Tries
    • Try
      • R(H);P_PINB(f),XS(e)
      • Threat
        • QAB1(K)
      • Vars
        • P(j);N_GUARD,N_SPINB(f),XR(H)::QAR1(K)
      • Refutation
        • R(b);P_SPINS(a)
    • Try
      • Q(K);XP(j)
      • Threat
        • QAR1(K)
      • Vars
        • B(h);N_GUARD,P_SPINR(i),XP(G)::S(C)
        • R(b);N_GUARD,P_SPINS(a)::S(C),XR(b)
        • S(e);N_GUARD,P_SPINB(f)::QAB1(K)
      • Refutation
        • B(h);P_SPINR(i),XB(J)
  • Actual
    • P(B);XP(c)
    • Threat
      • P(B)
    • Vars
      • B(f);N_GUARD,P_SPINS(e),XP(E)::QAB1(K)
      • R(i);N_GUARD,P_SPINB(h)::S(C),XR(i)
      • S(a);N_GUARD,P_SPINR(b)::S(C),XS(a)
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