MESON Chess Problem Database
Problem Display
PID: 18415 (4K3/8/p5N1/R3p3/3b2kP/4r1N1/3QP3/5BR1 w - - 0 1)
Allison, Christopher John
Time & Tide, 1955
#2
9 + 5
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Qxe2#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Rf3
- 2.Qg5#
- 1...Rxg3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bc5
- 2.Qd7#
- 1...Bb6
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...Rxe2
- Tries
- 1.Ke7?
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.Qg5#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Rf3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bb6
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...Bc5+!
- 1...Rxe2
- 1.Kf7?
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.Qg5#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bc5
- 2.Qd7#
- 1...Bb6
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...Rf3+!
- 1...Rxe2
- 1.Kd8?
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.Qg5#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Rf3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bc5
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...Bb6+!
- 1...Rxe2
- 1.Sf5+?
- 1...Kh5
- 2.Rg5#
- 1...Rg3
- 2.Qg5#
- 1...Kxf5!
- 1...Kh5
- 1.Rc5?
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.Qg5#
- 1...Bxc5
- 2.Qd7#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Rf3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...a5!
- 1...Rxe2
- 1.Rxa6?
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.Qg5#
- 1...Ra3
- 2.Qg5#
- 1...Rb3
- 2.Qg5#
- 1...Rc3
- 2.Qg5#
- 1...Rd3
- 2.Qg5#
- 1...Rf3
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bc5
- 2.Qd7#
- 1...Bb6
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4!
- 1...Rxe2
- 1.Qxe3?
- threat
- 2.Qg5#
- 2.Qf3#
- 2.Qe4#
- 1...e4
- 2.Sh1#
- 2.Sxe4#
- 2.Sh5#
- 2.Rg5#
- 2.Qf4#
- 2.Qg5#
- 2.Qxe4#
- 1...Bxe3!
- threat
- 1.Qd3?
- threat
- 2.Qf5#
- 1...Rxg3
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.exf3#
- 1...Re4
- 2.Qxe4#
- 2.Qf3#
- 1...e4
- 2.Rg5#
- 1...Rxd3!
- threat
- 1.Qxd4+?
- 1...Re4
- 2.Qxe4#
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 2.Qd7#
- 1...exd4+!
- 1...Re4
- 1.Ke7?
- Keys
- 1.Qd1!
- 1...Rxe2
- 2.Qxe2#
- 1...Rxg3
- 2.e4#
- 1...Ra3
- 2.e3#
- 1...Rb3
- 2.e3#
- 1...Rc3
- 2.e3#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.e3#
- 1...Ba1
- 2.Qd7#
- 1...Bb2
- 2.Qd7#
- 1...Bc3
- 2.Qd7#
- 1...Bc5
- 2.Qd7#
- 1...Bb6
- 2.Qd7#
- 1...Ba7
- 2.Qd7#
- 1...e4
- 2.Rg5#
- 1...Rxe2
- 1.Qd1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE::QAR1(C)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- R(a);OGATE::QAR1(C)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
- Refutation
- B(b);CHECK
- Try
- K(I);S_FLIGHT
- Vars
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- R(a);OGATE::QAR1(C)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
- Refutation
- R(a);CHECK
- Try
- K(I);P-FLIGHT
- Vars
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- R(a);OGATE::QAR1(C)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
- Refutation
- B(b);CHECK
- Try
- S(E);CHECK
- Vars
- K(c);OGATE,S_FLIGHT::R1(B)
- R(a);OGATE,P_SPINR(a)::QAR1(C)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT,XS(E)
- Try
- R(G);
- Vars
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- B(b);OGATE,XR(G)::QAB(C)
- R(a);OGATE::QAR1(C)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
- Refutation
- P(e);
- Try
- R(G);XP(e)
- Vars
- R(a);OGATE,XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAR1(C)
- R(a);OGATE::QAR1(C)
- B(b);OGATE::QAB(C)
- Refutation
- P(d);
- Try
- Q(C);XR(a)
- Threat
- DUALS(3)
- Refutation
- B(b);XQ(C)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- R(a);OGATE,P_SPINR(a),XS(E)::QAB1(C)
- P(d);OGATE::R1(G)
- Refutation
- R(a);XQ(C)
- Try
- Q(C);CHECK,XB(b)
- Refutation
- P(d);CHECK,XQ(C)
- Try
- Actual
- Q(C);
- Vars
- R(a);OGATE,P_SPINR(a),XP(D)::QAB(C),XR(a)
- R(a);OGATE,P_SPINR(a),XS(E)::QAB(C)+P(D)
- R(a);OGATE::QAB(C)+P(D)
- R(a);OGATE::QAB(C)+P(D),XR(a)
- R(a);OGATE::P(D),XR(a)
- B(b);OGATE::QAB(C)
- P(d);OGATE::R1(G)
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).