MESON Chess Problem Database
Problem Display
PID: 201611 (8/8/8/1N1n4/3P2p1/1p2p1P1/4k3/RQn1BRK1 w - - 0 1)
Nanning, Willem
De Maasbode, 1922
#2
8 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd1
- 2.Qd3#
- 1...Sa2
- 2.Qd1#
- 1...Sd3
- 2.Qd1#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sf6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Se7
- 2.Sc3#
- 1...b2
- 2.Qc2#
- 1...Kd1
- Tries
- 1.Kg2?
- 1...Kd1
- 2.Qd3#
- 1...Sa2
- 2.Qd1#
- 1...Sd3
- 2.Qd1#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sf6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Se7
- 2.Sc3#
- 1...b2
- 2.Qc2#
- 1...Sf4+!
- 1...Kd1
- 1.Ra2+?
- 1...Kd1
- 2.Bf2#
- 2.Bc3#
- 2.Bb4#
- 2.Ba5#
- 1...bxa2
- 2.Qc2#
- 1...b2
- 2.Qc2#
- 1...Sxa2!
- 1...Kd1
- 1.Rf2+?
- 1...Kd1
- 2.Qxc1#
- 1...Kxe1
- 2.Qxc1#
- 1...exf2+!
- 1...Kd1
- 1.Qf5?
- 1...Kd1
- 2.Qd3#
- 1...Sd3
- 2.Qxg4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sf6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Se7
- 2.Sc3#
- 1...b2
- 2.Qc2#
- 1...Sa2!
- 1...Kd1
- 1.Qg6?
- 1...Kd1
- 2.Qd3#
- 1...Sd3
- 2.Qxg4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sf6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Se7
- 2.Sc3#
- 1...b2
- 2.Qc2#
- 1...Sa2!
- 1...Kd1
- 1.Qb2+?
- 1...Kd1
- 2.Bf2#
- 2.Bc3#
- 2.Bb4#
- 2.Ba5#
- 2.Rxc1#
- 1...Kd3!
- 1...Kd1
- 1.Kg2?
- Keys
- 1.Qe4!
- 1...Kd1
- 2.Qd3#
- 1...Sa2
- 2.Rf2#
- 1...Sd3
- 2.Qxg4#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sf6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Se7
- 2.Sc3#
- 1...b2
- 2.Qc2#
- 1...Kd1
- 1.Qe4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B)
- S(a);OGATE::QAB1(B)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::QAR2(B)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B)
- S(a);OGATE::QAB1(B)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::QAR2(B)
- Refutation
- S(f);CHECK
- Try
- R(A);CHECK
- Vars
- P(c);N_GUARD,XR(A)::QAR2(B)
- P(c);N_GUARD,P_SPINP(c)::QAR2(B)
- Refutation
- S(a);XR(A)
- Try
- R(D);CHECK
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR1(B),XS(a)
- K(b);P-FLIGHT,P_SPINS(a),XB(C)::QAR2(B),XS(a)
- Refutation
- P(d);CHECK,XR(D)
- Try
- Q(B);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B)
- S(a);SBLOCK::QAB(B),XP(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::QAR2(B)
- Refutation
- S(a);
- Try
- Q(B);
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAR2(B)
- S(a);SBLOCK::QAB(B),XP(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::QAR2(B)
- Refutation
- S(a);
- Try
- Q(B);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- Q(B);P_PINP(d)
- Vars
- K(b);N_SPINP(d),P_SPINS(a),S_FLIGHT::QAR2(B)
- S(a);::R1(D)
- S(a);SBLOCK::QAB(B),XP(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- P(c);N_GUARD::QAR2(B)
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).