MESON Chess Problem Database
Problem Display
PID: 150689 (4b1B1/p1Bn1n2/R1p3p1/3k2Pp/3N1QpR/2K4P/8/8 w - - 0 1)
Parker, AS
The Referee, 1926
(First published on Sun Mar 28 1926)
#2
9 + 9
| 15239 | Valois Notebooks | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Ra5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...gxh3
- 2.Qd6#
- 1...g3
- 2.Qd6#
- 1...c5
- 2.Rd6#
- 1...Kc5
- Tries
- 1.Kb3?
- 1...Kc5
- 2.Ra5#
- 1...gxh3
- 2.Qd6#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...g3
- 2.Qd6#
- 1...c5
- 2.Rd6#
- 1...Sc5+!
- 1...Kc5
- 1.Kb4?
- 1...gxh3
- 2.Qd6#
- 2.Qf3#
- 2.Qe4#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...g3
- 2.Qd6#
- 2.Qf3#
- 2.Qe4#
- 1...c5+!
- 1...gxh3
- 1.Sc2?
- threat
- 2.Qc4#
- 1...Kc5
- 2.Ra5#
- 2.Qc4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Se2?
- threat
- 2.Qc4#
- 1...Kc5
- 2.Ra5#
- 2.Qc4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Sb3?
- threat
- 2.Qc4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Sf3?
- threat
- 2.Qc4#
- 1...Kc5
- 2.Ra5#
- 2.Qc4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Sb5?
- threat
- 2.Qc4#
- 1...Kc5
- 2.Qc4#
- 1...cxb5
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Sf5?
- threat
- 2.Qc4#
- 1...Kc5
- 2.Ra5#
- 2.Qc4#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Ke6!
- threat
- 1.Bxf7+?
- 1...Kc5
- 2.Bd6#
- 2.Ra5#
- 2.Rxc6#
- 2.Qd6#
- 1...Bxf7!
- 1...Kc5
- 1.Rxg4?
- threat
- 2.Qd6#
- 1...Kc5
- 2.Ra5#
- 1...Se5
- 2.Qxe5#
- 1...hxg4!
- threat
- 1.Ra5+?
- 1...Sc5
- 2.Qe5#
- 1...c5!
- 1...Sc5
- 1.Rxa7?
- 1...Kc5
- 2.Ra5#
- 1...gxh3
- 2.Qd6#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...g3
- 2.Qd6#
- 1...c5!
- 1...Kc5
- 1.Qf3+?
- 1...Kc5
- 2.Ra5#
- 2.Rxc6#
- 2.Qxc6#
- 1...gxf3!
- 1...Kc5
- 1.Qe4+?
- 1...Kc5
- 2.Ra5#
- 2.Rxc6#
- 2.Qxc6#
- 1...Kxe4!
- 1...Kc5
- 1.Qf5+?
- 1...Se5
- 2.Qxe5#
- 1...gxf5!
- 1...Se5
- 1.Qf6?
- threat
- 2.Qxc6#
- 1...Ke4
- 2.Qf3#
- 1...Kc5
- 2.Ra5#
- 2.Qxc6#
- 1...c5
- 2.Qc6#
- 2.Qe6#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sxf6!
- threat
- 1.Qxf7+?
- 1...Ke4
- 2.Qf3#
- 2.Qf4#
- 1...Kc5
- 2.Ra5#
- 2.Rxc6#
- 2.Qc4#
- 2.Qe7#
- 1...Bxf7!
- 1...Ke4
- 1.hxg4?
- 1...Kc5
- 2.Ra5#
- 1...c5
- 2.Rd6#
- 2.Qf3#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...hxg4!
- 1...Kc5
- 1.Kb3?
- Keys
- 1.Qg3!
- 1...Ke4
- 2.Qf3#
- 1...Kc5
- 2.Ra5#
- 1...gxh3
- 2.Qd6#
- 1...c5
- 2.Qg2#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Ke4
- 1.Qg3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- S(g);N_GUARD,SBLOCK::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- P(a);XP(B)::QAR1(D)
- P(a);::QAR1(D)
- P(d);OGATE,SBLOCK::R1(G)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- P(a);XP(B)::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- P(a);::QAR1(D)
- P(d);OGATE,SBLOCK::R1(G)
- Refutation
- S(g);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- S(g);N_GUARD::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- Refutation
- P(d);CHECK
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- K(b);N_SPINS(h),P-FLIGHT::QAR1(D)
- P(d);XS(C)::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- S(C);
- Threat
- QAB1(D)
- Vars
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- B(I);CHECK,XS(h)
- Refutation
- B(i);XB(I)
- Try
- R(E);XP(a)
- Threat
- QAR1(D)
- Vars
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- S(g);N_GUARD::QAR1(D),XS(g)
- Refutation
- P(c);XR(E)
- Try
- R(G);CHECK
- Vars
- S(g);N_SPINS(h),P_SPINS(g)::QAR1(D)
- Refutation
- P(d);P_SPINP(d)
- Try
- R(G);XP(f)
- Vars
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- P(a);XP(B)::QAR1(D)
- S(g);N_GUARD,SBLOCK::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- P(a);::QAR1(D)
- Refutation
- P(d);
- Try
- Q(D);CHECK
- Refutation
- P(a);XQ(D)
- Try
- Q(D);CHECK
- Refutation
- K(b);N_SPINS(h),P_SPINP(a),S_FLIGHT,XQ(D)
- Try
- Q(D);CHECK
- Vars
- S(g);N_GUARD,N_SPINS(h),P_SPINS(g)::QAR1(D),XS(g)
- Refutation
- P(e);XQ(D)
- Try
- Q(D);
- Threat
- QAB1(D),XP(d)
- Vars
- K(b);N_SPINS(h),P_SPINP(a),S_FLIGHT::QAB1(D)
- S(g);N_GUARD,SBLOCK::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- S(g);XQ(D)
- Try
- Q(D);CHECK,XS(h)
- Refutation
- B(i);P_SPINB(i),XQ(D)
- Try
- P(B);XP(a)
- Vars
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- S(g);N_GUARD,SBLOCK::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
- Refutation
- P(c);XP(B)
- Try
- Actual
- Q(D);
- Vars
- K(b);N_SPINS(h),P_SPINP(a),S_FLIGHT::QAB1(D)
- K(b);N_SPINS(h),P-FLIGHT::R(G)
- P(a);XP(B)::QAR1(D)
- P(d);SBLOCK::QAB(D)
- S(g);N_GUARD,SBLOCK::QAR1(D)
- S(g);N_GUARD::QAR1(D),XS(g)
- S(g);N_GUARD::QAR1(D)
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).