MESON Chess Problem Database

Problem Display
PID: 9418 (8/5p2/3p1B2/3B4/1p2PNp1/1P2k1p1/1npN4/2b2QK1 w - - 0 1)

Colpa, Johannes J

Tijdschrift vd NSB, 1902

8/5p2/3p1B2/3B4/1p2PNp1/1P2k1p1/1npN4/2b2QK1

#2

8 + 9

15 British Chess Magazine 1909
16 Chess Amateur (The) 1910
2638 White to Play 1913
3360 Simple Two-move Themes 1924
5424 Versunkene Schatze 1998
56 The Problemist 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd2
      • 2.Qe2#
    • 1...Bxd2
      • 2.Sg2#
    • 1...Sd1
      • 2.Sc4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sa4
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...g2
      • 2.Qf2#
  • Tries
    • 1.Kh1?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Bxd2
        • 2.Sg2#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...g2+!
    • 1.Kg2?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Bxd2!
    • 1.Bc6?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Bxd2
        • 2.Sg2#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...g2
        • 2.Qf2#
      • 1...d5!
    • 1.Bb7?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Bxd2
        • 2.Sg2#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...g2
        • 2.Qf2#
      • 1...d5!
    • 1.Ba8?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Bxd2
        • 2.Sg2#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...g2
        • 2.Qf2#
      • 1...d5!
    • 1.Bxb2?
      • threat
        • 2.Sc4#
      • 1...Kxd2
        • 2.Qe2#
        • 2.Qxc1#
      • 1...Bxd2
        • 2.Sg2#
      • 1...Bxb2!
    • 1.Bc3?
      • threat
        • 2.Sg2#
      • 1...g2
        • 2.Sxg2#
        • 2.Qf2#
      • 1...bxc3!
    • 1.Bd4+?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Kxd4!
    • 1.Be5?
      • threat
        • 2.Qe2#
        • 2.Qe1#
      • 1...Kxd2
        • 2.Qe2#
      • 1...Bxd2
        • 2.Sg2#
        • 2.Qe2#
      • 1...Sd3
        • 2.Sc4#
        • 2.Qe2#
        • 2.Qxd3#
      • 1...dxe5!
    • 1.Qf3+?
      • 1...Kxd2
        • 2.Qe2#
      • 1...gxf3!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg2#
      • 1...Kxf4
        • 2.Bg5#
      • 1...gxf3
        • 2.Qxc1#
      • 1...g2
        • 2.Sxg2#

This is after

After O. C. Budde

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(d);S_FLIGHT,XS(C)::QAR1(A)
    • B(a);SBLOCK,XS(C)::S(F)
    • S(b);N_GUARD::S(C)
    • S(b);N_GUARD::S(C),XS(b)
    • P(e);N_GUARD::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
        • B(a);SBLOCK,XS(C)::S(F)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
      • Refutation
        • P(e);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
      • Refutation
        • B(a);XS(C)
    • Try
      • B(G);
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
        • B(a);SBLOCK,XS(C)::S(F)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
        • P(e);N_GUARD::QAB1(A)
      • Refutation
        • P(h);
    • Try
      • B(G);
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
        • B(a);SBLOCK,XS(C)::S(F)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
        • P(e);N_GUARD::QAB1(A)
      • Refutation
        • P(h);
    • Try
      • B(G);
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
        • B(a);SBLOCK,XS(C)::S(F)
        • S(b);N_GUARD::S(C)
        • S(b);N_GUARD::S(C),XS(b)
        • P(e);N_GUARD::QAB1(A)
      • Refutation
        • P(h);
    • Try
      • B(H);XS(b)
      • Threat
        • S(C)
      • Vars
        • B(a);SBLOCK,XS(C)::S(F)
      • Refutation
        • B(a);XB(H)
    • Try
      • B(H);
      • Threat
        • S(F)
      • Refutation
        • P(f);XB(H)
    • Try
      • B(H);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT,XB(H)
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • P(h);XB(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • P(g);XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(F)::B(H)
      • P(g);SBLOCK,XS(C)::QAB(A),XB(a)
      • P(e);::S(F),XP(e)
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