MESON Chess Problem Database

Problem Display
PID: 148251 (1R1r1B2/n7/4p1N1/p2k3K/3pq2p/1P1N3P/5QR1/7B w - - 0 1)

Woodard, Eugene

7th Prize, Dubuque Chess Journal, 1890

1R1r1B2/n7/4p1N1/p2k3K/3pq2p/1P1N3P/5QR1/7B

#2

10 + 8

15 British Chess Magazine 1911
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2
      • 2.Bxg2#
      • 2.Qxg2#
    • 1...Qxd3
      • 2.Rg5#
    • 1...Qf3+
      • 2.Qxf3#
    • 1...Qf5+
      • 2.Rg5#
    • 1...Qxg6+
      • 2.Rxg6#
    • 1...Qe1
      • 2.Rg5#
    • 1...Qe3
      • 2.Rg5#
    • 1...Qf4
      • 2.Rg5#
    • 1...Qg4+
      • 2.Rxg4#
    • 1...Qe5+
      • 2.Rg5#
    • 1...Rd6
      • 2.Se7#
    • 1...Sc6
      • 2.Rb5#
    • 1...a4
      • 2.Sb4#
  • Tries
    • 1.Sdf4+?
      • 1...Qxf4
        • 2.Rg5#
      • 1...Kc6!
    • 1.Sgf4+?
      • 1...Qxf4
        • 2.Rg5#
      • 1...Kc6!
    • 1.Qxd4+?
      • 1...Kc6
        • 2.Rc2#
      • 1...Qxd4
        • 2.Rg5#
      • 1...Kxd4!
  • Keys
    • 1.Qf7!
      • 1...Qf3+
        • 2.Qxf3#
      • 1...Qf5+
        • 2.Rg5#
      • 1...Qxg6+
        • 2.Rxg6#
      • 1...Qe2+
        • 2.Rxe2#
      • 1...Qg4+
        • 2.Rxg4#
      • 1...Qe5+
        • 2.Rg5#
      • 1...Kc6
        • 2.Qb7#
      • 1...Qxg2
        • 2.Bxg2#
      • 1...Qxd3
        • 2.Rg5#
      • 1...Rxb8
        • 2.Qd7#
      • 1...Rxf8
        • 2.Qd7#
      • 1...Qe1
        • 2.Rg5#
      • 1...Qe3
        • 2.Rg5#
      • 1...Qf4
        • 2.Rg5#
      • 1...Rd6
        • 2.Se7#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Rc8
        • 2.Qd7#
      • 1...Re8
        • 2.Qd7#
      • 1...Sb5
        • 2.Qb7#
      • 1...Sc6
        • 2.Rb5#
      • 1...Sc8
        • 2.Qb7#
      • 1...a4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • Q(b);XS(E)::B(A)+R(C),DCHECK
    • Q(b);CHECK,OGATEB::QAB(B),XQ(b)
    • Q(b);CHECK,S_CUTP(f)::B(A)+R(C)
    • Q(b);CHECK,OGATE,XS(H)::B(A)+R(C),XQ(b)
    • Q(b);::B(A)+R(C),DCHECK
    • Q(b);CHECK,OGATEB::B(A)+R(C),XQ(b)
    • R(h);SBLOCK::S(H)
    • S(g);N_GUARD,SBLOCK::R(I)
    • P(d);N_GUARD::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • Q(b);XS(E)::B(A)+R(C),DCHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(H);CHECK
      • Vars
        • Q(b);XS(H)::B(A)+R(C),DCHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(B);CHECK,XP(a)
      • Vars
        • K(e);S_FLIGHT::R(C)
        • Q(b);SBLOCK,XQ(B)::B(A)+R(C),DCHECK
      • Refutation
        • K(e);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);P_PINP(f)
    • Vars
      • Q(b);CHECK,OGATEB::QAB(B),XQ(b)
      • Q(b);CHECK::B(A)+R(C)
      • Q(b);CHECK,OGATE,XS(H)::B(A)+R(C),XQ(b)
      • Q(b);CHECK,OGATEB::B(A)+R(C),XQ(b)
      • K(e);N_SPINP(f),S_FLIGHT::QAB1(B)
      • Q(b);OGATE,P_SPINQ(b),XR(C)::B(A),XQ(b)
      • Q(b);XS(E)::B(A)+R(C),DCHECK
      • R(h);N_GUARD,XR(I)::QAR2(B)
      • R(h);N_GUARD,XB(J)::QAR2(B)
      • Q(b);::B(A)+R(C),DCHECK
      • R(h);SBLOCK::S(H)
      • R(h);N_GUARD::QAR2(B),XR(h)
      • R(h);N_GUARD::QAR2(B)
      • S(g);N_GUARD::QAB(B)
      • S(g);N_GUARD,SBLOCK::R(I)
      • P(d);N_GUARD::S(E)
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