MESON Chess Problem Database
Problem Display
PID: 96278 (2R5/4p3/R2b2Q1/2pk4/2p3P1/2Pn4/5p2/1B3K2 w - - 0 1)
Becker, Christopher Bennett
US Problem Bulletin, 1964
#2
7 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...Ke5
- Tries
- 1.Bc2?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Bxd3?
- threat
- 2.Qe4#
- 1...Ke5
- 2.Qf5#
- 1...e5
- 2.Be4#
- 2.Rxd6#
- 2.Qf7#
- 2.Qxd6#
- 2.Qg8#
- 1...cxd3!
- threat
- 1.Rb6?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rc7?
- 1...Ke5
- 2.Qf5#
- 1...Bxc7
- 2.Qe6#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rca8?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rb8?
- 1...Ke5
- 2.Qf5#
- 1...Bxb8
- 2.Qe6#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rd8?
- 1...Ke5
- 2.Qf5#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Raxd6#
- 2.Rdxd6#
- 1...e6!
- 1...Ke5
- 1.Rf8?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rg8?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Rh8?
- 1...Ke5
- 2.Qf5#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...e6!
- 1...Ke5
- 1.Qxd3+?
- 1...Ke5
- 2.Qf5#
- 1...Ke6
- 2.Qf5#
- 1...cxd3!
- 1...Ke5
- 1.Qf5+?
- 1...Be5
- 2.Rd8#
- 2.Qf3#
- 1...Se5
- 2.Be4#
- 1...e5!
- 1...Be5
- 1.Bc2?
- Keys
- 1.Re8!
- 1...Ke5
- 2.Qf5#
- 1...e6
- 2.Qxe6#
- 1...Bh2
- 2.Qe6#
- 1...Bg3
- 2.Qe6#
- 1...Bf4
- 2.Qe6#
- 1...Be5
- 2.Qc6#
- 1...Bc7
- 2.Qe6#
- 1...Bb8
- 2.Qe6#
- 1...Sc1
- 2.Qe4#
- 1...Se1
- 2.Qe4#
- 1...Sb2
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 1...e5
- 2.Rxd6#
- 1...Ke5
- 1.Re8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Tries
- Try
- B(A);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- B(A);XS(b)
- Threat
- QAB1(F)
- Vars
- K(e);P-FLIGHT::QAR1(F)
- Refutation
- P(c);XB(A)
- Try
- R(E);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);XR(G)::QAB1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);XR(G)::QAB1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);P_PINB(f)
- Vars
- K(e);N_SPINB(f),P-FLIGHT::QAR1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- K(e);P-FLIGHT::QAR1(F)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD,SBLOCK::R1(E),XB(f)
- Refutation
- P(g);
- Try
- Q(F);CHECK,XS(b)
- Vars
- K(e);P-FLIGHT::QAR1(F)
- K(e);P_SPINB(f),S_FLIGHT::QAB1(F)
- Refutation
- P(c);XQ(F)
- Try
- Q(F);CHECK
- Vars
- S(b);OGATE,P_SPINS(b)::B(A)
- Refutation
- P(g);P_SPINP(g)
- Try
- Actual
- R(G);
- Vars
- K(e);P-FLIGHT,P_SPINP(g)::QAR1(F)
- P(g);::QAB1(F),XP(g)
- B(f);::QAB1(F)
- B(f);OGATE,SBLOCK::QAB1(F)
- S(b);::QAB1(F)
- S(b);OGATE,SBLOCK::B(A)
- P(g);N_GUARD::R1(E),XB(f)
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).