MESON Chess Problem Database
Problem Display
PID: 203019 (4R3/3pQ1pr/8/K1R4q/4P3/1N2k3/2P1NpP1/5B2 w - - 0 1)
Rice, John Michael
The Problemist, 1983
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxe2
- 2.Qg5#
- 1...Qf3
- 2.Rc3#
- 1...Qg4
- 2.Rc3#
- 1...Qg6
- 2.Rc3#
- 1...Qf7
- 2.Rc3#
- 1...Qxe8
- 2.Rc3#
- 1...Qh1
- 2.Rc3#
- 2.Qg5#
- 1...Qh2
- 2.Rc3#
- 1...Qh3
- 2.Rc3#
- 2.Qg5#
- 1...Qh4
- 2.Rc3#
- 1...Qxc5+
- 2.Qxc5#
- 1...Qd5
- 2.exd5#
- 1...Qf5
- 2.exf5#
- 1...Qg5
- 2.Qxg5#
- 1...Qh6
- 2.Rc3#
- 1...d5
- 2.Rc3#
- 1...g5
- 2.Rc3#
- 1...Qxe2
- Tries
- 1.Ka4?
- threat
- 2.Rc3#
- 1...Qxe2
- 2.Qg5#
- 1...Qxc5
- 2.Qxc5#
- 1...Qd5
- 2.exd5#
- 1...Qe5!
- threat
- 1.Kb4?
- threat
- 2.Rc3#
- 1...Qxc5+
- 2.Qxc5#
- 1...Qxe2
- 2.Qg5#
- 1...Qd5
- 2.exd5#
- 1...Qe5!
- threat
- 1.Rd5?
- threat
- 2.Qc5#
- 1...Qxd5+
- 2.exd5#
- 1...Qxe2
- 2.Qg5#
- 1...Qxe8
- 2.Rd3#
- 1...d6
- 2.Qa7#
- 1...Qe5!
- threat
- 1.Rg5?
- threat
- 2.Qc5#
- 1...Qxg5+
- 2.Qxg5#
- 1...Qxe8
- 2.Rg3#
- 1...d5
- 2.exd5#
- 1...d6
- 2.Qa7#
- 1...Qxe2!
- threat
- 1.Rxh5?
- threat
- 2.Qc5#
- 2.Qg5#
- 1...d5
- 2.Qg5#
- 2.exd5#
- 1...d6
- 2.Qg5#
- 2.Qa7#
- 1...g5
- 2.Qc5#
- 2.Qxg5#
- 1...Rxh5+!
- threat
- 1.Qd6?
- threat
- 2.Qf4#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qxc5+
- 2.Qxc5#
- 1...Qxe8
- 2.Qf4#
- 2.Qd3#
- 2.Qd4#
- 1...Qe5
- 2.Qd3#
- 1...Qf3
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qg4
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qf7
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qh2
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qh4
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qd5
- 2.Qg3#
- 2.Qf4#
- 2.exd5#
- 1...Qf5
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 2.exf5#
- 1...Qg5
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qh6
- 2.Rc3#
- 2.Qg3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...g5
- 2.Rc3#
- 2.Qd2#
- 2.Qd3#
- 2.Qd4#
- 1...Qxe2!
- threat
- 1.Qf8?
- threat
- 2.Qf4#
- 1...Qxc5+
- 2.Qxc5#
- 1...Qe5
- 2.Qf3#
- 1...Qf3
- 2.Rc3#
- 2.Qxf3#
- 1...Qg4
- 2.Rc3#
- 1...Qf7
- 2.Rc3#
- 1...Qh2
- 2.Rc3#
- 2.Qf3#
- 1...Qh4
- 2.Rc3#
- 2.Qf3#
- 1...Qf5
- 2.exf5#
- 1...Qg5
- 2.Qf3#
- 1...Qh6
- 2.Rc3#
- 2.Qf3#
- 1...g5
- 2.Rc3#
- 1...Qxe2!
- threat
- 1.Qe5?
- threat
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.Qf4#
- 1...Qxe2
- 2.Qg5#
- 1...Qxe8
- 2.Rc3#
- 2.Qd4#
- 2.Qf4#
- 1...Qf3
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qg4
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qf7
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qh2
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qh4
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qf5
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.exf5#
- 1...Qg5
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 2.Qxg5#
- 1...Qh6
- 2.Rc3#
- 2.Qc3#
- 2.Qg3#
- 2.Qd4#
- 1...g5
- 2.Rc3#
- 2.Qc3#
- 2.Qd4#
- 1...Qxe5!
- threat
- 1.Ka4?
- Keys
- 1.Rf5!
- threat
- 2.Qc5#
- 1...Qxf5+
- 2.exf5#
- 1...Qxe8
- 2.Rf3#
- 1...d5
- 2.exd5#
- 1...d6
- 2.Qa7#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(c);N_GUARD,N_PINR(H),XS(C)::QAB(I)
- Q(c);N_PINR(H)::R(H)
- Q(c);N_PINR(H),XR(J)::R(H)
- Q(c);CHECK,OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);OGATE::QAR(I)+P(F),XQ(c)
- Q(c);N_GUARD::QAB(I),XQ(c)
- P(d);N_PINR(H)::R(H)
- P(e);N_PINR(H)::R(H)
- Tries
- Try
- K(G);N_SPINR(H),P-FLIGHT
- Threat
- R(H)
- Vars
- Q(c);N_GUARD,XS(C)::QAB(I)
- Q(c);OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);OGATE::QAR(I)+P(F),XQ(c)
- Refutation
- Q(c);
- Try
- K(G);N_SPINR(H),S_FLIGHT
- Threat
- R(H)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);N_GUARD,XS(C)::QAB(I)
- Q(c);OGATE::QAR(I)+P(F),XQ(c)
- Refutation
- Q(c);
- Try
- R(H);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAR(I)+P(F),XQ(c)
- Q(c);N_GUARD,N_PINR(H),XS(C)::QAB(I)
- Q(c);N_PINR(H),XR(J)::R1(H)
- P(d);OGATE::QAB(I)
- Refutation
- Q(c);
- Try
- R(H);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);N_PINR(H),XR(J)::R(H)
- P(d);N_PINR(H),OGATE::QAR(I)+P(F),XP(d)
- P(d);OGATE::QAB(I)
- Refutation
- Q(c);N_PINR(H),XS(C)
- Try
- R(H);N_SPINR(H),XQ(c)
- Threat
- DUALS(2)
- Refutation
- R(f);CHECK,XR(H)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);::QAR1(I)
- Refutation
- Q(c);N_PINR(H),XS(C)
- Try
- Q(I);
- Threat
- QAB1(I)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAB(I),XQ(c)
- Q(c);N_GUARD::QAR1(I)
- Q(c);N_PINR(H)::R(H)
- Q(c);OGATE::R(J)+P(F),XQ(c)
- P(e);N_PINR(H)::R(H)
- Refutation
- Q(c);N_PINR(H),XS(C)
- Try
- Q(I);N_SPINR(H)
- Threat
- DUALS(4)
- Vars
- Q(c);N_GUARD,XS(C)::QAB(I)
- Refutation
- Q(c);P_PINR(H),XQ(I)
- Try
- Actual
- R(H);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,OGATE,XR(H)::QAR(I)+P(F),XQ(c)
- Q(c);N_PINR(H),XR(J)::R1(H)
- P(d);N_PINR(H),OGATE::QAR(I)+P(F),XP(d)
- P(d);OGATE::QAB(I)
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).