MESON Chess Problem Database

Problem Display
PID: 22119 (7b/5b1P/N2p3Q/1P1kpP1N/R1r3R1/1n6/r1n1P2K/1B6 w - - 0 1)

Andrade, Barry Jack da Costa

Newcastle Weekly Chronicle, 1924

7b/5b1P/N2p3Q/1P1kpP1N/R1r3R1/1n6/r1n1P2K/1B6

#2

11 + 9

887 Mate in Two Moves 1931

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.e4#
    • 1...Rc5
      • 2.e4#
    • 1...Rc6
      • 2.e4#
    • 1...Rc7
      • 2.e4#
    • 1...Rc8
      • 2.e4#
    • 1...Bxh5
      • 2.Qe6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Be8
      • 2.Qe6#
    • 1...Bg8
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Scd4
      • 2.Be4#
    • 1...Sbd4
      • 2.e4#
    • 1...Sc5
      • 2.Sc7#
  • Tries
    • 1.Qd2+?
      • 1...Rd4
        • 2.e4#
      • 1...Scd4
        • 2.Be4#
        • 2.e4#
      • 1...Sbd4
        • 2.e4#
      • 1...Sxd2!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxf7#
      • 1...Bxh5
        • 2.Qe6#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Rc7
        • 2.e4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bg6
        • 2.Qe6#
      • 1...Be8
        • 2.Qe6#
      • 1...Bg8
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Scd4
        • 2.Be4#
      • 1...Sbd4
        • 2.e4#
      • 1...Sc5
        • 2.Sc7#
      • 1...e4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::P(B)
    • B(h);N_GUARD,XS(H)::QAB1(J)
    • B(h);N_GUARD::QAB1(J),XB(h)
    • B(h);N_GUARD::QAB1(J)
    • B(h);OGATE::PXB(h)=Q
    • B(i);N_GUARD::S(H),XB(i)
    • S(b);OGATE,P_PINP(B),SBLOCK::B(A)
    • S(c);SBLOCK,S_CUTR(d)::P(B)
    • S(c);SBLOCK,S_CUTR(d)::S(I)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • R(d);P_SPINR(d)::P(B)
        • S(c);P_SPINS(c)::P(B)
      • Refutation
        • S(c);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB(J),XB(h)
    • Vars
      • B(h);N_GUARD,XS(H)::QAB1(J)
      • B(i);XQ(J)::S(H),XB(i)
      • R(d);N_GUARD::P(B)
      • B(h);N_GUARD::QAB1(J),XB(h)
      • B(h);N_GUARD::QAB1(J)
      • B(h);OGATE::PXB(h)=Q
      • S(b);OGATE,P_PINP(B),SBLOCK::B(A)
      • S(c);SBLOCK,S_CUTR(d)::P(B)
      • S(c);SBLOCK,S_CUTR(d)::S(I)
      • P(f);N_GUARD,SBLOCK,S_CUTR(d)::S(H)
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