MESON Chess Problem Database
Problem Display
PID: 110618 (1Q6/N1B5/2P5/6pR/N1k4b/n3K1p1/P1b3P1/n1R5 w - - 0 1)
Nelson, Nels H
Mineapolis Journal, 1939
#2
10 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Qg8#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...g4
- 2.Rc5#
- 1...Kd5
- Tries
- 1.Bxg3?
- 1...Kd5
- 2.Qg8#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4
- 2.Rc5#
- 2.Qf4#
- 1...Bxg3!
- 1...Kd5
- 1.Bd8?
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4
- 2.Rc5#
- 2.Qf4#
- 1...Kd5!
- 1...Sb5
- 1.Rxg5?
- threat
- 2.Rc5#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 2.axb3#
- 1...Bxg5+!
- threat
- 1.Rh6?
- 1...Kd5
- 2.Qg8#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4!
- 1...Kd5
- 1.Rh7?
- 1...Kd5
- 2.Qg8#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4!
- 1...Kd5
- 1.Rh8?
- 1...Kd5
- 2.Qg8#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4!
- 1...Kd5
- 1.Qb2?
- threat
- 2.Qd4#
- 1...Sb3
- 2.Qxb3#
- 1...Sb5
- 2.Qxb5#
- 1...Kd5!
- threat
- 1.Qb6?
- threat
- 2.Qd4#
- 2.Qc5#
- 1...Sb5
- 2.Qc5#
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Kd5!
- threat
- 1.Qb7?
- 1...Sb5
- 2.Qxb5#
- 1...g4
- 2.Rc5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...Kd5!
- 1...Sb5
- 1.Qf8?
- threat
- 2.Qc5#
- 1...Kd5
- 2.Qf7#
- 2.Qg8#
- 1...Sb3!
- threat
- 1.Bxg3?
- Keys
- 1.Bf4!
- 1...gxf4+
- 2.Qxf4#
- 1...Kd5
- 2.Qg8#
- 1...Sb5
- 2.Qxb5#
- 1...Sb3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...g4
- 2.Rc5#
- 1...gxf4+
- 1.Bf4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT::QAB(J)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- P(g);OGATE::R1(F)
- Tries
- Try
- B(I);XP(d)
- Vars
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT::QAB(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- B(f);XB(I)
- Try
- B(I);
- Vars
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT
- Try
- R(F);XP(g)
- Threat
- R1(F)
- Vars
- S(c);N_GUARD::QAB1(J),XS(c)
- Refutation
- B(f);CHECK,XR(F)
- Try
- R(F);
- Vars
- K(e);N_SPINB(b),S_FLIGHT::QAB(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- P(g);
- Try
- R(F);
- Vars
- K(e);N_SPINB(b),S_FLIGHT::QAB(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- P(g);
- Try
- R(F);
- Vars
- K(e);N_SPINB(b),S_FLIGHT::QAB(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- P(g);
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J),XS(c)
- Refutation
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAB1(J),XS(a)
- Refutation
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT
- Try
- Q(J);
- Vars
- S(c);N_GUARD::QAB1(J),XS(c)
- P(g);OGATE::R1(F)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- Refutation
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT
- Try
- Q(J);
- Threat
- QAR1(J)
- Refutation
- S(a);
- Try
- Actual
- B(I);
- Vars
- P(g);CHECK,OGATE,XB(I)::QAR(J),XP(g)
- K(e);N_SPINB(b),P_SPINP(g),S_FLIGHT::QAB(J)
- S(c);N_GUARD::QAB1(J),XS(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- S(c);N_GUARD::QAB1(J)
- P(g);OGATE::R1(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).