MESON Chess Problem Database
Problem Display
PID: 226870 (K7/Q7/8/8/4R1N1/8/R3Np2/3B3k w - - 0 1)
Rosner, Eugene David
US Problem Bulletin, 1982
#2
7 + 2
SOLUTION
- SOUND
- Sets
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...f1Q
- Tries
- 1.Kb7?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Kb8?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Sg3+?
- 1...Kg1
- 2.Qxf2#
- 1...Kg2!
- 1...Kg1
- 1.Bb3?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Ba4?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Rb2?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Rc2?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Rd2?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Rea4?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Rb4?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Rc4?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Rf4?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Re5?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Re6?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Re7?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Re8?
- threat
- 2.Qb7#
- 1...f1Q
- 2.Sg3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- threat
- 1.Qe3?
- threat
- 2.Qf3#
- 2.Qh3#
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 2.Qf3#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 2.Qh3#
- 1...Kg2!
- threat
- 1.Qd4?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Qc5?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Qb6?
- 1...f1Q
- 2.Sg3#
- 1...f1S
- 2.Qg1#
- 1...f1B
- 2.Sg3#
- 2.Qg1#
- 1...f1R
- 2.Sg3#
- 1...Kg2!
- 1...f1Q
- 1.Qf7?
- threat
- 2.Qf3#
- 1...f1Q
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Kg2!
- threat
- 1.Kb7?
- Keys
- 1.Sf4!
- 1...Kg1
- 2.Re1#
- 1...f1Q
- 2.Rh2#
- 1...f1S
- 2.Bf3#
- 1...f1B
- 2.Rh2#
- 1...f1R
- 2.Rh2#
- 1...Kg1
- 1.Sf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- K(G);P-FLIGHT
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- K(a);P-FLIGHT,P_SPINP(b)::QAB1(F),XP(b)
- Refutation
- K(a);P_SPINP(b),S_FLIGHT
- Try
- B(A);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- B(A);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- R(B);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- R(B);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- R(B);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- R(D);
- Threat
- QAB(F)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(b);::S(C)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Vars
- P(b);::S(C)
- P(b);OGATE::QAR1(F)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- P(b);OGATE::QAR2(F),XQ(b)
- P(b);OGATE::QAR2(F),XB(b)
- P(b);OGATE::QAR2(F),XR(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- S(C);
- Vars
- K(a);P-FLIGHT,P_SPINP(b)::R(D)
- P(b);OGATE::R1(B)
- P(b);::B(A)
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).