MESON Chess Problem Database
Problem Display
PID: 102855 (5K2/8/8/3R2p1/2P2QN1/6p1/4p1p1/4krRn w - - 0 1)
Hermanson, Halvar
Northwest Chess, 1975
#2
6 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...Rxg1
- Tries
- 1.Ke7?
- threat
- 2.Qc1#
- 2.Qd2#
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- threat
- 1.Kf7?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Kg7?
- threat
- 2.Qc1#
- 2.Qd2#
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- threat
- 1.Ke8?
- threat
- 2.Qc1#
- 2.Qd2#
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- threat
- 1.Kg8?
- threat
- 2.Qc1#
- 2.Qd2#
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- threat
- 1.Se3?
- threat
- 2.Sc2#
- 2.Sxg2#
- 1...Rxg1
- 2.Sc2#
- 1...gxf4!
- threat
- 1.Rd3?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Rd4?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Rd6?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Rd7?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Rd8?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 1...gxf4!
- 1...Rxg1
- 1.Qf3?
- 1...Sf2
- 2.Qc3#
- 1...Rxg1!
- 1...Sf2
- 1.Qf5?
- 1...Rxg1
- 2.Qb1#
- 1...Sf2!
- 1...Rxg1
- 1.c5?
- 1...Rxg1
- 2.Qc1#
- 1...Sf2
- 2.Qd2#
- 2.Qb4#
- 1...gxf4!
- 1...Rxg1
- 1.Ke7?
- Keys
- 1.Qf6!
- 1...Rxg1
- 2.Qa1#
- 1...Sf2
- 2.Qc3#
- 1...Rxg1
- 1.Qf6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Tries
- Try
- K(F);N_SPINQ(C),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINR(b),XR(A)::QAR2(C)
- S(c);::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- K(F);P-FLIGHT
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- K(F);N_SPINQ(C),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINR(b),XR(A)::QAR2(C)
- S(c);::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- K(F);N_SPINQ(C),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINR(b),XR(A)::QAR2(C)
- S(c);::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- K(F);N_SPINQ(C),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINR(b),XR(A)::QAR2(C)
- S(c);::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::S(D)
- Refutation
- P(g);XQ(C)
- Try
- R(E);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- R(E);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- R(E);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- R(E);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- R(E);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- S(c);N_PINQ(C)::QAB1(C)
- Refutation
- P(g);XQ(C)
- Try
- Q(C);
- Vars
- S(c);N_PINQ(C)::QAB(C)
- Refutation
- R(b);N_PINQ(C),N_SPINR(b),XR(A)
- Try
- Q(C);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR(C)
- Refutation
- S(c);N_PINQ(C)
- Try
- P(B);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR2(C)
- Refutation
- P(g);XQ(C)
- Try
- Actual
- Q(C);
- Vars
- R(b);N_PINQ(C),N_SPINR(b),XR(A)::QAR(C)
- S(c);N_PINQ(C)::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).