MESON Chess Problem Database
Problem Display
PID: 22412 (4N3/1n4p1/6Q1/2n1k3/2P3K1/5P2/4B3/5N2 w - - 0 1)
Andrade, Barry Jack da Costa
The Field, 1956
(First published on Thu Apr 19 1956)
#2
7 + 4
| 3242 | BCPS Rapid Solving (Cheltenham) | 2001 |
| 3713 | Snap | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Qxg7#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sa5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4
- Tries
- 1.Kg5?
- 1...Se4+
- 2.Qxe4#
- 1...Kd4
- 2.Qxg7#
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sa6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Se6+!
- 1...Se4+
- 1.Sd2?
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sa5
- 1.Sh2?
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sa5
- 1.Se3?
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sa5
- 1.Sg3?
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sa5
- 1.Bd1?
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sa5
- 1.Bd3?
- 1...Sxd3
- 2.Qe4#
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Kd4!
- 1...Sxd3
- 1.Qf7?
- threat
- 2.Qd5#
- 1...Kd4
- 2.Qxg7#
- 1...Se6!
- threat
- 1.Qg5+?
- 1...Kd4
- 2.Qe3#
- 2.Qxg7#
- 1...Ke6!
- 1...Kd4
- 1.Kg5?
- Keys
- 1.Qb6!
- 1...Kd4
- 2.Qb2#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Qd6#
- 1...Sb3
- 2.Qe3#
- 1...Sd3
- 2.Qe3#
- 1...Sa4
- 2.Qe3#
- 1...Se4
- 2.f4#
- 1...Sa6
- 2.Qe3#
- 1...Se6
- 2.Qe3#
- 1...Sd7
- 2.Qe3#
- 1...Sd8
- 2.Qd6#
- 1...g5
- 2.Qf6#
- 1...g6
- 2.Qf6#
- 1...Kd4
- 1.Qb6!
This anticipates 270719(1959)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(b);S_FLIGHT::QAB(F),XP(d)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(a);CHECK,N_GUARD::QAR1(F),XS(a)
- K(b);S_FLIGHT::QAB(F),XP(d)
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- S(a);CHECK
- Try
- S(A);
- Vars
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- S(A);
- Vars
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- S(A);
- Vars
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- S(A);
- Vars
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- B(B);
- Vars
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- B(B);
- Vars
- S(a);N_GUARD,XB(B)::QAR1(F)
- S(c);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(a);N_GUARD,SBLOCK::QAR1(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- K(b);S_FLIGHT::QAB(F),XP(d)
- Refutation
- S(a);
- Try
- Q(F);CHECK
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(F);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAB(F)
- S(c);N_GUARD::QAB1(F),XS(c)
- S(c);N_GUARD::QAB1(F)
- S(a);OGATE::QAR2(F)
- S(a);SBLOCK::P(C)
- S(a);OGATE,SBLOCK::QAR2(F)
- P(d);N_GUARD::QAB1(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).