MESON Chess Problem Database
Problem Display
PID: 202635 (8/1K1n4/8/R7/1nk1N3/2P5/8/1Q6 w - - 0 1)
Nanning, Willem
De Maasbode, 1923
#2
5 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qb5#
- 1...Sc2
- 2.Qb5#
- 1...Sd3
- 2.Qa2#
- 2.Qb5#
- 1...Sd5
- 2.Qb5#
- 1...Sa6
- 2.Qb5#
- 1...Sc6
- 2.Qb5#
- 1...Sc5+
- 2.Rxc5#
- 1...Se5
- 2.Rc5#
- 1...Sb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sa2
- Tries
- 1.Ka7?
- 1...Sc2
- 2.Qb5#
- 1...Sc5
- 2.Rxc5#
- 1...Sa2
- 2.Qb5#
- 1...Sd3
- 2.Qa2#
- 2.Qb5#
- 1...Sd5
- 2.Qb5#
- 1...Sa6
- 2.Qb5#
- 1...Se5
- 2.Rc5#
- 1...Sb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sc6+!
- 1...Sc2
- 1.Ka8?
- 1...Sc2
- 2.Qb5#
- 1...Sc5
- 2.Rxc5#
- 1...Sa2
- 2.Qb5#
- 1...Sd3
- 2.Qa2#
- 2.Qb5#
- 1...Sd5
- 2.Qb5#
- 1...Sa6
- 2.Qb5#
- 1...Sc6
- 2.Qb5#
- 1...Se5
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sb6+!
- 1...Sc2
- 1.Kc8?
- 1...Sc2
- 2.Qb5#
- 1...Sc5
- 2.Rxc5#
- 1...Sa2
- 2.Qb5#
- 1...Sd3
- 2.Qa2#
- 2.Qb5#
- 1...Sd5
- 2.Qb5#
- 1...Sa6
- 2.Qb5#
- 1...Sc6
- 2.Qb5#
- 1...Se5
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sb6+!
- 1...Sc2
- 1.Qc2?
- threat
- 2.Sd2#
- 2.Sd6#
- 1...Sc5+
- 2.Rxc5#
- 1...Sxc2!
- threat
- 1.Qd1?
- 1...Sc5+
- 2.Rxc5#
- 1...Sc2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sa2
- 2.Qd5#
- 1...Sa6
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Se5
- 2.Rc5#
- 1...Sb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sd3!
- 1...Sc5+
- 1.Qf1+?
- 1...Sd3
- 2.Qf7#
- 1...Kb3!
- 1...Sd3
- 1.Ka7?
- Keys
- 1.Rb5!
- 1...Sc5+
- 2.Rxc5#
- 1...Kxb5
- 2.Qxb4#
- 1...Sa2
- 2.Qf1#
- 1...Sc2
- 2.Qf1#
- 1...Sd3
- 2.Qb3#
- 1...Sd5
- 2.Qf1#
- 1...Sa6
- 2.Qf1#
- 1...Sc6
- 2.Qf1#
- 1...Se5
- 2.Rc5#
- 1...Sb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Sc5+
- 1.Rb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);OGATE::QAB1(A)
- S(c);CHECK,N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(a);OGATE::QAB1(A)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- Refutation
- S(a);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- S(a);OGATE::QAB1(A)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- Refutation
- S(c);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- S(a);OGATE::QAB1(A)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- Refutation
- S(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,N_GUARD::R1(D),XS(c)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Vars
- S(c);CHECK,N_GUARD::R1(D),XS(c)
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(c);N_GUARD::R1(D)
- Refutation
- S(a);
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a),SBLOCK::QAB(A)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- R(D);
- Vars
- S(c);CHECK,N_GUARD::R1(D),XS(c)
- K(b);P_SPINS(a),S_FLIGHT,XR(D)::QAR1(A),XS(a)
- S(a);N_GUARD::QAB(A)
- S(a);SBLOCK::QAB1(A)
- S(c);N_GUARD::R1(D)
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).