MESON Chess Problem Database

Problem Display
PID: 96744 (1Nb5/2pp2p1/2P1P1p1/1PB1k1P1/2Qp1pK1/5P2/8/8 w - - 0 1)

Thomson, Robert Gavin

BCPS, 1936

1Nb5/2pp2p1/2P1P1p1/1PB1k1P1/2Qp1pK1/5P2/8/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Sxd7#
    • 1...Bb7
      • 2.Sxd7#
    • 1...d3
      • 2.Qe4#
    • 1...dxc6
      • 2.Sxc6#
    • 1...dxe6
      • 2.Qxd4#
    • 1...d5
      • 2.Qe2#
    • 1...d6
      • 2.Bxd4#
  • Tries
    • 1.Ba3?
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...d3
        • 2.Qe4#
      • 1...d6!
    • 1.Bb4?
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...d3
        • 2.Qe4#
      • 1...d6!
    • 1.Be7?
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...d3
        • 2.Qe4#
      • 1...d6!
    • 1.b6?
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qxd4#
      • 1...d5
        • 2.Qe2#
      • 1...d6
        • 2.Bxd4#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...d3
        • 2.Qe4#
      • 1...cxb6!
    • 1.cxd7?
      • threat
        • 2.Sc6#
      • 1...Bxd7
        • 2.Sxd7#
      • 1...c6
        • 2.Sxc6#
      • 1...Bb7!
  • Keys
    • 1.Bf8!
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qc5#
      • 1...d5
        • 2.Qe2#
      • 1...d6
        • 2.Bxg7#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...d3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::S(I),XP(f)
    • P(a);OGATE::QAR1(B)
    • P(f);P_PINP(H),XP(G)::S(I),XP(f)
    • P(f);SBLOCK,XP(H)::QAB1(B),XP(a)
    • P(f);P_PINP(H),SBLOCK::QAR(B)
    • P(f);P_PINP(H),SBLOCK::B(E),XP(a)
  • Tries
    • Try
      • B(E);
      • Vars
        • P(f);P_PINP(H),XP(G)::S(I),XP(f)
        • P(f);N_GUARD,SBLOCK,XP(H)::QAR2(B)
        • P(f);P_PINP(H),SBLOCK::QAR(B)
        • B(h);N_GUARD::S(I),XP(f)
        • P(a);OGATE::QAR1(B)
      • Refutation
        • P(f);P_PINP(H)
    • Try
      • B(E);
      • Vars
        • P(f);P_PINP(H),XP(G)::S(I),XP(f)
        • P(f);N_GUARD,SBLOCK,XP(H)::QAR2(B)
        • P(f);P_PINP(H),SBLOCK::QAR(B)
        • B(h);N_GUARD::S(I),XP(f)
        • P(a);OGATE::QAR1(B)
      • Refutation
        • P(f);P_PINP(H)
    • Try
      • B(E);
      • Vars
        • P(f);P_PINP(H),XP(G)::S(I),XP(f)
        • P(f);N_GUARD,SBLOCK,XP(H)::QAR2(B)
        • P(f);P_PINP(H),SBLOCK::QAR(B)
        • B(h);N_GUARD::S(I),XP(f)
        • P(a);OGATE::QAR1(B)
      • Refutation
        • P(f);P_PINP(H)
    • Try
      • P(D);
      • Vars
        • P(f);P_PINP(H),XP(G)::S(I),XP(f)
        • P(f);SBLOCK,XP(H)::QAB1(B),XP(a)
        • P(f);P_PINP(H),SBLOCK::QAR(B)
        • P(f);P_PINP(H),SBLOCK::B(E),XP(a)
        • B(h);N_GUARD::S(I),XP(f)
        • P(a);OGATE::QAR1(B)
      • Refutation
        • P(e);XP(D)
    • Try
      • P(G);XP(f)
      • Threat
        • S(I)
      • Vars
        • B(h);P_PINP(H),XP(G)::S(I),XB(h)
        • P(e);::S(I),XP(e)
      • Refutation
        • B(h);
  • Actual
    • B(E);
    • Vars
      • P(f);P_PINP(H),XP(G)::S(I),XP(f)
      • P(f);N_GUARD,SBLOCK,XP(H)::QAR2(B)
      • P(f);P_PINP(H),SBLOCK::QAR(B)
      • P(f);P_PINP(H),SBLOCK::B(E),XP(g)
      • B(h);N_GUARD::S(I),XP(f)
      • P(a);OGATE::QAR1(B)
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