MESON Chess Problem Database

Problem Display
PID: 228803 (6r1/P3P3/K4R1b/pBQpN2R/r3k2P/4p3/bB2p3/3q3N w - - 0 1)

Sundman, Gote

Tidskrift for Schack, 1978

6r1/P3P3/K4R1b/pBQpN2R/r3k2P/4p3/bB2p3/3q3N

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Qxc2#
    • 1...Qa1
      • 2.Bd3#
      • 2.Qc2#
    • 1...Qc1
      • 2.Bd3#
    • 1...Qe1
      • 2.Bd3#
      • 2.Qc2#
    • 1...Qf1
      • 2.Bd3#
      • 2.Qc2#
    • 1...Qg1
      • 2.Bd3#
      • 2.Qc2#
    • 1...Qxh1
      • 2.Bd3#
      • 2.Qc2#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Rg3
      • 2.Sxg3#
    • 1...Ra8
      • 2.Sg3#
    • 1...Rb8
      • 2.Sg3#
    • 1...Rc8
      • 2.Sg3#
    • 1...Rd8
      • 2.Sg3#
    • 1...Re8
      • 2.Sg3#
    • 1...Rf8
      • 2.Sg3#
    • 1...Rh8
      • 2.Sg3#
    • 1...Bg5
      • 2.Sg3#
    • 1...Bg7
      • 2.Sg3#
  • Tries
    • 1.Qc2+?
      • 1...Qd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...Qxc2!
    • 1.e8S?
      • threat
        • 2.Sd6#
      • 1...Rxe8
        • 2.Sg3#
      • 1...Bf8!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Re5#
      • 1...Rc4
        • 2.Qxd5#
      • 1...Bc4
        • 2.Qd4#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Rg5
        • 2.Rf4#
      • 1...Bg5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::QAB(E),XQ(a)
    • Q(a);N_GUARD::B(D)
    • Q(a);N_GUARD,P_PINB(D)::B(D),XQ(a)
    • R(j);N_GUARD::S(A),XR(j)
    • R(j);N_GUARD,P_PINP(J)::S(A)
    • R(j);N_GUARD::S(A)
    • B(i);S_CUTR(j)::S(A)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • Q(a);XQ(E)
    • Try
      • P(K);
      • Threat
        • S(K)
      • Vars
        • R(j);N_GUARD,XS(K)::S(A)
      • Refutation
        • B(i);
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • R(e);S_CUTB(b)::QAB1(E),XP(h)
      • B(b);P_PINB(D),S_CUTR(e)::QAR1(E)
      • B(i);N_GUARD::R1(I),XB(i)
      • R(j);S_CUTB(i)::R1(I)
      • B(i);S_CUTR(j)::S(A)
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