MESON Chess Problem Database
Problem Display
PID: 122404 (8/8/1p1K1p2/3N4/3k4/1r1P1r2/3Q4/3R4 w - - 0 1)
Wolfenter, Friedrich
Kolnische Rundschau, 1969
#2
5 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qc3#
- 1...Rb2
- 2.Qc3#
- 2.Qxb2#
- 1...Ra3
- 2.Qb4#
- 1...Rc3
- 2.Qxc3#
- 1...Rbxd3
- 2.Qb4#
- 1...Rb4
- 2.Qc3#
- 2.Qxb4#
- 1...Rb5
- 2.Qc3#
- 1...Rf1
- 2.Qe3#
- 1...Rf2
- 2.Qe3#
- 2.Qxf2#
- 1...Rfxd3
- 2.Qf4#
- 1...Re3
- 2.Qxe3#
- 1...Rg3
- 2.Qf4#
- 1...Rh3
- 2.Qf4#
- 1...Rf4
- 2.Qe3#
- 2.Qxf4#
- 1...Rf5
- 2.Qe3#
- 1...Rb1
- Tries
- 1.Rc1?
- threat
- 2.Rc4#
- 1...Rbxd3
- 2.Qb4#
- 1...Rfxd3
- 2.Qf4#
- 1...Rc3
- 2.Qxc3#
- 1...Rb4
- 2.Qc3#
- 1...b5!
- threat
- 1.Re1?
- threat
- 2.Re4#
- 1...Rbxd3
- 2.Qb4#
- 1...Rfxd3
- 2.Qf4#
- 1...Re3
- 2.Qxe3#
- 1...Rf4
- 2.Qe3#
- 1...f5!
- threat
- 1.Qc1?
- threat
- 2.Qc4#
- 1...Rfxd3
- 2.Qf4#
- 1...Rc3
- 2.Qxc3#
- 1...Rb4
- 2.Qc3#
- 1...b5
- 2.Qc5#
- 1...Rbxd3!
- threat
- 1.Qb2+?
- 1...Rc3
- 2.Qxc3#
- 1...Rxb2!
- 1...Rc3
- 1.Qc2?
- threat
- 2.Qc4#
- 1...Rbxd3
- 2.Qa4#
- 1...Rc3
- 2.Qxc3#
- 1...Rb4
- 2.Qc3#
- 1...b5
- 2.Qc5#
- 1...Rfxd3!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 1...Rfxd3
- 2.Qg4#
- 1...Re3
- 2.Qxe3#
- 1...Rf4
- 2.Qe3#
- 1...f5
- 2.Qe5#
- 1...Rbxd3!
- threat
- 1.Qf2+?
- 1...Re3
- 2.Qxe3#
- 1...Rxf2!
- 1...Re3
- 1.Rc1?
- Keys
- 1.Qe1!
- threat
- 2.Qe4#
- 1...Rbxd3
- 2.Qb4#
- 1...Rfxd3
- 2.Qh4#
- 1...Re3
- 2.Qxe3#
- 1...Rf4
- 2.Qe3#
- 1...f5
- 2.Qe5#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::QAB1(B)
- R(a);N_GUARD::QAR2(B)
- R(a);N_GUARD::QAB1(B),XR(a)
- R(a);N_GUARD,P_SPINR(a),XP(C)::QAR2(B)
- R(b);N_GUARD::QAB1(B)
- R(b);N_GUARD,P_SPINR(b),XP(C)::QAR2(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAR2(B)
- Tries
- Try
- R(A);
- Threat
- R1(A)
- Vars
- R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(C)::QAR2(B)
- R(b);N_GUARD,P_SPINR(b),SBLOCK,XP(C)::QAR2(B)
- R(a);N_GUARD::QAB1(B),XR(a)
- R(a);N_GUARD::QAB1(B)
- Refutation
- P(d);
- Try
- R(A);
- Threat
- R1(A)
- Vars
- R(a);N_GUARD,P_SPINR(a),SBLOCK,XP(C)::QAR2(B)
- R(b);N_GUARD,P_SPINR(b),SBLOCK,XP(C)::QAR2(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAB1(B)
- Refutation
- P(e);
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(b);N_GUARD,P_SPINR(b),XP(C)::QAR2(B)
- R(a);N_GUARD::QAB1(B),XR(a)
- R(a);N_GUARD::QAB1(B)
- P(d);N_GUARD::QAB1(B)
- Refutation
- R(a);P_SPINR(a),XP(C)
- Try
- Q(B);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(B),XR(a)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(a);OGATE,P_SPINR(a),XP(C)::QAR(B)
- R(a);N_GUARD::QAB1(B),XR(a)
- R(a);N_GUARD::QAB1(B)
- P(d);N_GUARD::QAB1(B)
- Refutation
- R(b);P_SPINR(b),XP(C)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(b);OGATE,P_SPINR(b),XP(C)::QAR(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAB1(B)
- P(e);N_GUARD::QAB1(B)
- Refutation
- R(a);P_SPINR(a),XP(C)
- Try
- Q(B);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
- Refutation
- R(b);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(C)::QAR2(B)
- R(b);N_GUARD,P_SPINR(b),XP(C)::QAR(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);N_GUARD::QAB1(B)
- P(e);N_GUARD::QAB1(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).