MESON Chess Problem Database
Problem Display
PID: 101005 (5K2/pB1p1p2/N2k4/2rpp1N1/7Q/B5p1/5qb1/3R3n w - - 0 1)
Heydon, Joseph Kentigern
Good Companions, 1919
#2
7 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Bxc5#
- 1...Qf1
- 2.Bxc5#
- 1...Qa2
- 2.Bxc5#
- 1...Qb2
- 2.Bxc5#
- 1...Qd2
- 2.Bxc5#
- 1...Qe2
- 2.Bxc5#
- 1...Qf3
- 2.Bxc5#
- 1...Qf4
- 2.Bxc5#
- 1...Qf5
- 2.Bxc5#
- 1...Qf6
- 2.Bxc5#
- 1...Bf1
- 2.Rxd5#
- 1...Bh3
- 2.Rxd5#
- 1...d4
- 2.Bxc5#
- 1...e4
- 2.Rxd5#
- 1...f5
- 2.Qh6#
- 1...Qe1
- Tries
- 1.Sf3?
- threat
- 2.Qf6#
- 2.Qe7#
- 1...Qxf3
- 2.Qe7#
- 1...Bh3
- 2.Qe7#
- 1...f6
- 2.Qxf6#
- 1...Ke6!
- threat
- 1.Se4+?
- 1...Bxe4
- 2.Qe7#
- 1...Ke6!
- 1...Bxe4
- 1.Qg4?
- 1...e4
- 2.Rxd5#
- 1...f6
- 2.Sf7#
- 1...Qe1
- 2.Sxf7#
- 2.Bxc5#
- 1...Qg1
- 2.Sxf7#
- 1...Qe3
- 2.Sxf7#
- 1...Qd4
- 2.Sxf7#
- 1...Qf1
- 2.Bxc5#
- 1...Qa2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qb2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qc2
- 2.Sxf7#
- 1...Qd2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qe2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qf3
- 2.Bxc5#
- 1...Qf4
- 2.Bxc5#
- 1...Qf5
- 2.Bxc5#
- 1...Qf6
- 2.Bxc5#
- 1...Bf1
- 2.Se4#
- 2.Rxd5#
- 1...Bf3
- 2.Sxf7#
- 1...Bh3
- 2.Se4#
- 2.Rxd5#
- 1...Be4
- 2.Sxe4#
- 1...d4
- 2.Bxc5#
- 1...f5!
- 1...e4
- 1.Qh6+?
- 1...Qf6
- 2.Bxc5#
- 2.Qxf6#
- 1...f6!
- 1...Qf6
- 1.Sf3?
- Keys
- 1.Qh3!
- 1...Bxh3
- 2.Rxd5#
- 1...e4
- 2.Rxd5#
- 1...f6
- 2.Sf7#
- 1...Qe1
- 2.Sxf7#
- 2.Bxc5#
- 1...Qg1
- 2.Sxf7#
- 1...Qe3
- 2.Sxf7#
- 1...Qd4
- 2.Sxf7#
- 1...Qf1
- 2.Bxc5#
- 1...Qa2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qb2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qc2
- 2.Sxf7#
- 1...Qd2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qe2
- 2.Sxf7#
- 2.Bxc5#
- 1...Qf3
- 2.Bxc5#
- 1...Qf4
- 2.Bxc5#
- 1...Qf5
- 2.Bxc5#
- 1...Qf6
- 2.Bxc5#
- 1...Bf1
- 2.Se4#
- 2.Rxd5#
- 1...Bf3
- 2.Sxf7#
- 1...Be4
- 2.Sxe4#
- 1...d4
- 2.Bxc5#
- 1...f5
- 2.Qh6#
- 1...Bxh3
- 1.Qh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::B(B),XR(e)
- Q(b);N_GUARD,N_SPINP(f)::B(B),XR(e)
- B(c);N_GUARD::R1(A),XP(f)
- P(f);S_CUTQ(b)::B(B),XR(e)
- P(g);S_CUTB(c)::R1(A),XP(f)
- P(k);N_GUARD,S_CUTQ(b)::QAR(C)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);XS(D)::QAB1(C)
- B(c);::QAB1(C)
- P(k);::QAR2(C),XP(k)
- Refutation
- K(h);N_SPINP(f),N_SPINR(e),P-FLIGHT
- Try
- S(D);CHECK
- Vars
- B(c);XS(D)::QAB1(C)
- Refutation
- K(h);N_SPINP(f),N_SPINR(e),P-FLIGHT
- Try
- Q(C);
- Vars
- P(g);S_CUTB(c)::R1(A),XP(f)
- P(k);S_CUTQ(b)::S(D)
- Q(b);N_GUARD::S(D),XP(k)
- Q(b);N_GUARD,N_SPINP(f)::S(D),XP(k)
- Q(b);N_GUARD::B(B),XR(e)
- B(c);S_CUTQ(b)::S(D),XP(k)
- B(c);N_GUARD::S(D),XB(c)
- P(f);S_CUTQ(b)::B(B),XR(e)
- Refutation
- P(k);
- Try
- Q(C);CHECK
- Refutation
- P(k);
- Try
- Actual
- Q(C);
- Vars
- B(c);N_GUARD,XQ(C)::R1(A),XP(f)
- P(g);S_CUTB(c)::R1(A),XP(f)
- P(k);S_CUTQ(b)::S(D)
- Q(b);N_GUARD::S(D),XP(k)
- Q(b);N_GUARD,N_SPINP(f)::S(D),XP(k)
- Q(b);N_GUARD::B(B),XR(e)
- B(c);S_CUTQ(b)::S(D),XP(k)
- B(c);N_GUARD::S(D),XB(c)
- P(f);S_CUTQ(b)::B(B),XR(e)
- P(k);N_GUARD,S_CUTQ(b)::QAR(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).