MESON Chess Problem Database

Problem Display
PID: 101223 (8/1p1K1Q2/6Rp/1Nk1p2r/P4p2/2Bn4/8/2R1n3 w - - 0 1)

Seplowin, Samuel

Good Companions (May), 1917

8/1p1K1Q2/6Rp/1Nk1p2r/P4p2/2Bn4/8/2R1n3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Bxe1#
    • 1...Sb4
      • 2.Bd4#
    • 1...b6
      • 2.Rc6#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qc4#
      • 1...b5
        • 2.Rc6#
      • 1...Sb2!
    • 1.Sd6?
      • threat
        • 2.Se4#
        • 2.Sxb7#
      • 1...Sf2
        • 2.Sxb7#
      • 1...e4
        • 2.Sxe4#
        • 2.Sxb7#
      • 1...b5
        • 2.Se4#
        • 2.Sb7#
      • 1...b6
        • 2.Se4#
        • 2.Sb7#
        • 2.Qc4#
      • 1...Kb6!
    • 1.Bd2+?
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sxc1!
    • 1.Ba5+?
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sxc1!
    • 1.Rd6?
      • threat
        • 2.Qd5#
      • 1...Sb4
        • 2.Bd4#
      • 1...e4!
    • 1.Qb3?
      • threat
        • 2.Bb4#
        • 2.Bd4#
      • 1...Sxc1
        • 2.Bb4#
      • 1...Sb4
        • 2.Bxb4#
        • 2.Bd4#
      • 1...Sc2!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Qc7#
      • 1...Kc4
        • 2.Kd6#
      • 1...Kb6
        • 2.Kd5#
      • 1...Kc6
        • 2.Qc7#
      • 1...Sb4
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::R(A)+B(B),XS(a)
    • S(b);SBLOCK::R(A)+B(B),DCHECK
    • P(h);N_GUARD::R1(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • P(h);N_GUARD::R1(E)
      • Refutation
        • S(b);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::S(D),XP(h)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(b);XR(A)
    • Try
      • B(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(E);
      • Threat
        • QAR1(G)
      • Vars
        • S(b);SBLOCK::R(A)+B(B),DCHECK
      • Refutation
        • P(e);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XR(A)::B(B)
      • Refutation
        • S(a);
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR2(G)
    • Vars
      • K(d);P-FLIGHT::QAB(G)+K(F)
      • K(d);S_FLIGHT::R(E)+K(F)
      • K(d);P-FLIGHT::QAR1(G)
      • S(b);SBLOCK::R(A)+B(B),DCHECK
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