MESON Chess Problem Database

Problem Display
PID: 245704 (1r5b/1p3R2/3kp3/1K1N4/5P2/pB1N2nb/3Rp3/q7 w - - 0 1)

Wirtanen, Erkki Aukusti

Sachove umeni (Ceskoslovensky sach), 1961

1r5b/1p3R2/3kp3/1K1N4/5P2/pB1N2nb/3Rp3/q7

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb6?
      • threat
        • 2.Rd7#
      • 1...Qe5+
        • 2.Sxe5#
      • 1...Qg7
        • 2.Se5#
      • 1...e5
        • 2.Sb2#
      • 1...Rd8!
    • 1.Sf6?
      • threat
        • 2.Sb2#
        • 2.Rd7#
      • 1...Qe5+
        • 2.Sxe5#
        • 2.fxe5#
      • 1...Qxf6
        • 2.Se5#
      • 1...e1Q
        • 2.Rd7#
      • 1...e1S
        • 2.Rd7#
      • 1...e1B
        • 2.Rd7#
      • 1...Qb2
        • 2.Sxb2#
        • 2.Rd7#
      • 1...Qc3
        • 2.Rd7#
      • 1...Qd4
        • 2.Rd7#
      • 1...Qb1
        • 2.Rd7#
      • 1...Qc1
        • 2.Sxc1#
        • 2.Rd7#
      • 1...Qd1
        • 2.Rd7#
      • 1...Qe1
        • 2.Sxe1#
        • 2.Rd7#
      • 1...Qg1
        • 2.Sf2#
        • 2.Rd7#
      • 1...Qh1
        • 2.Rd7#
      • 1...Rd8
        • 2.Sb2#
      • 1...Bg2
        • 2.Rd7#
      • 1...Bf5
        • 2.Rd7#
      • 1...Sf1
        • 2.Se4#
        • 2.Rd7#
      • 1...Se4
        • 2.Sxe4#
        • 2.Rd7#
      • 1...Sf5
        • 2.Se4#
        • 2.Rd7#
      • 1...e5
        • 2.Sb2#
      • 1...Bxf6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rd7#
      • 1...exd5
        • 2.Rxd5#
      • 1...Qg7
        • 2.Sf6#
      • 1...Rd8
        • 2.Sxb7#
      • 1...e5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • Q(a);CHECK,N_GUARD::R(A)+S(C),XQ(a)
        • Q(a);N_GUARD::R(A)+S(C)
        • P(g);S_CUTB(j)::R(A)+S(C)
      • Refutation
        • R(i);
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD,XS(F)::R(A)+S(C)
        • P(b);::R1(G)
        • Q(a);::R1(G)
        • Q(a);P_PINB(B)::R1(G)
        • R(i);::R(A)+S(C)
        • B(e);::R1(G)
        • P(g);::R(A)+S(C)
      • Refutation
        • B(j);XS(F)
  • Actual
    • S(C);
    • Threat
      • R1(G)
    • Vars
      • P(g);OGATE,P_SPINP(g),XS(F)::R1(A),XP(g)
      • Q(a);N_GUARD::R(A)+S(F)
      • R(i);N_GUARD::S(C),XP(h)
      • P(g);S_CUTB(j)::R(A)+S(F)
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