MESON Chess Problem Database
Problem Display
PID: 109684 (8/1N6/1bp3q1/8/KBk5/1p5Q/b6n/2rR3B w - - 0 1)
Wetzel, P
2nd HM., La Cle, 1971
#2
6 + 8
| 274 | diagrammes | 1974 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sd6#
- 2.Qe6#
- 1...Qc2
- 2.Sd6#
- 2.Qe6#
- 1...Qd3
- 2.Qxd3#
- 1...Qe4
- 2.Sd6#
- 1...Qf5
- 2.Sd6#
- 1...Qh5
- 2.Sd6#
- 2.Qd3#
- 1...Qf7
- 2.Sd6#
- 2.Qd3#
- 1...Qh7
- 2.Sd6#
- 2.Qe6#
- 1...Qe8
- 2.Sd6#
- 2.Qd3#
- 1...Qg1
- 2.Sd6#
- 2.Qe6#
- 2.Qd3#
- 1...Qg2
- 2.Sd6#
- 2.Qd3#
- 1...Qg3
- 2.Qe6#
- 1...Qg4
- 2.Sd6#
- 2.Qd3#
- 1...Qg5
- 2.Sd6#
- 2.Qd3#
- 1...Qd6
- 2.Sxd6#
- 1...Qe6
- 2.Qxe6#
- 2.Qd3#
- 1...Qf6
- 2.Qd3#
- 1...Qh6
- 2.Qd3#
- 1...Qg7
- 2.Sd6#
- 2.Qe6#
- 2.Qd3#
- 1...Qg8
- 2.Sd6#
- 2.Qd3#
- 1...Ra1
- 2.Qc3#
- 1...Rb1
- 2.Qc3#
- 1...Rxd1
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Bb1
- 2.Qxb3#
- 1...Bg1
- 2.Sa5#
- 1...Bf2
- 2.Sa5#
- 1...Be3
- 2.Sa5#
- 1...Bd4
- 2.Sa5#
- 1...Ba5
- 2.Sxa5#
- 1...Bc5
- 2.Sa5#
- 1...Ba7
- 2.Sa5#
- 1...c5
- 2.Bd5#
- 1...Qb1
- Tries
- 1.Bxc6?
- threat
- 2.Bb5#
- 2.Bd5#
- 1...Rxd1
- 2.Qc3#
- 1...Qd3
- 2.Qxd3#
- 1...Qe4
- 2.Sd6#
- 2.Bb5#
- 1...Qf5
- 2.Sd6#
- 1...Qh5
- 2.Sd6#
- 2.Qd3#
- 1...Qf7
- 2.Sd6#
- 2.Bb5#
- 2.Qd3#
- 1...Qe8
- 2.Sd6#
- 2.Qd3#
- 1...Qg2
- 2.Sd6#
- 2.Bb5#
- 2.Qd3#
- 1...Qg5
- 2.Sd6#
- 2.Qd3#
- 1...Qd6
- 2.Sxd6#
- 2.Bb5#
- 1...Qe6
- 2.Bb5#
- 2.Qxe6#
- 2.Qd3#
- 1...Qg8
- 2.Sd6#
- 2.Bb5#
- 2.Qd3#
- 1...Bd4
- 2.Sa5#
- 1...Qxc6+!
- threat
- 1.Rxc1+?
- 1...Kd4
- 2.Qc3#
- 1...Qc2!
- 1...Kd4
- 1.Rd4+?
- 1...Bxd4
- 2.Sa5#
- 1...Kxd4!
- 1...Bxd4
- 1.Qf1+?
- 1...Qd3
- 2.Qxd3#
- 1...Sxf1!
- 1...Qd3
- 1.Qg4+?
- 1...Qe4
- 2.Sd6#
- 1...Qxg4
- 2.Sd6#
- 1...Bd4
- 2.Sa5#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sxg4!
- 1...Qe4
- 1.Qh4+?
- 1...Qe4
- 2.Sd6#
- 1...Qg4
- 2.Sd6#
- 1...Bd4
- 2.Sa5#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sg4!
- 1...Qe4
- 1.Bxc6?
- Keys
- 1.Be4!
- threat
- 2.Qd3#
- 1...Qxe4
- 2.Sd6#
- 1...Rxd1
- 2.Qc3#
- 1...Qg3
- 2.Qe6#
- 1...Qd6
- 2.Sxd6#
- 1...Rc3
- 2.Qxc3#
- 1...Bb1
- 2.Qxb3#
- 1...Be3
- 2.Sa5#
- 1...Sf3
- 2.Qf1#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(h);N_GUARD::QAB1(C),XQ(h)
- Q(h);N_GUARD::S(F)
- Q(h);N_GUARD::QAB(C)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::QAB1(C)
- R(a);N_GUARD::QAR1(C)
- R(a);N_GUARD,XR(A)::QAR1(C)
- R(a);N_GUARD::QAR1(C),XR(a)
- B(b);N_GUARD::QAB1(C),XP(d)
- B(f);N_GUARD::S(F)
- B(f);N_GUARD::S(F),XB(f)
- P(g);N_GUARD::B(B)
- Tries
- Try
- B(B);XP(g)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XR(A)::QAR1(C)
- Q(h);N_GUARD::QAB1(C),XQ(h)
- Q(h);N_GUARD::S(F)
- B(f);N_GUARD::S(F)
- Refutation
- Q(h);CHECK,XB(B)
- Try
- R(A);CHECK,XR(a)
- Vars
- K(e);P-FLIGHT::QAB1(C)
- Refutation
- Q(h);P_SPINQ(h)
- Try
- R(A);CHECK
- Vars
- B(f);SBLOCK,XR(A)::S(F)
- Refutation
- K(e);P-FLIGHT,XR(A)
- Try
- Q(C);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h)::QAB1(C),XQ(h)
- Refutation
- S(c);XQ(C)
- Try
- Q(C);CHECK
- Vars
- Q(h);P_SPINQ(h)::S(F)
- Q(h);XQ(C)::S(F)
- Refutation
- S(c);XQ(C)
- Try
- Q(C);CHECK
- Vars
- Q(h);P_SPINQ(h)::S(F)
- Refutation
- S(c);P_SPINS(c)
- Try
- Actual
- B(B);
- Threat
- QAB1(C)
- Vars
- Q(h);N_GUARD,XB(B)::S(F)
- R(a);N_GUARD,XR(A)::QAR1(C)
- Q(h);N_GUARD::QAB(C)
- Q(h);N_GUARD::S(F),XQ(h)
- R(a);N_GUARD::QAR1(C),XR(a)
- B(b);N_GUARD::QAB1(C),XP(d)
- B(f);N_GUARD::S(F)
- S(c);N_GUARD::QAB(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).