MESON Chess Problem Database
Problem Display
PID: 267784 (8/8/8/5R2/5r2/2p1pk1K/2Q1p3/4R3 w - - 0 1)
Morse, Christopher Jeremy
The Problemist, 1955
#2
4 + 5
SOLUTION
- SOUND
- Sets
- 1...Kf2
- 2.Qxe2#
- 1...Rxf5
- 2.Qxf5#
- 1...Kf2
- Tries
- 1.Kh2?
- 1...Kf2
- 2.Qxe2#
- 1...Rxf5
- 2.Qxf5#
- 1...Kg4!
- 1...Kf2
- 1.Ra1?
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...e1Q
- 2.Qg2#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...e1S!
- 1...Kf2
- 1.Rb1?
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...e1Q
- 2.Qg2#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...e1S!
- 1...Kf2
- 1.Rc1?
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...e1Q
- 2.Qg2#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...e1S!
- 1...Kf2
- 1.Rd1?
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...exd1Q
- 2.Qg2#
- 1...exd1S
- 2.Qg2#
- 1...exd1B
- 2.Qg2#
- 1...exd1R
- 2.Qg2#
- 1...e1Q
- 2.Qg2#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...e1S!
- 1...Kf2
- 1.Rg1?
- 1...Rxf5
- 2.Qxf5#
- 1...e1Q
- 2.Qg2#
- 1...e1S
- 2.Rf1#
- 2.Rg3#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Rg3#
- 2.Qg2#
- 1...Kf2!
- 1...Rxf5
- 1.Rf6?
- 1...Kf2
- 2.Qxe2#
- 1...Rf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rxf6!
- 1...Kf2
- 1.Rf7?
- 1...Kf2
- 2.Qxe2#
- 1...Rf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rf6
- 2.Rxf6#
- 1...Rxf7!
- 1...Kf2
- 1.Rf8?
- 1...Kf2
- 2.Qxe2#
- 1...Rf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rf6
- 2.Rxf6#
- 1...Rf7
- 2.Rxf7#
- 1...Rxf8!
- 1...Kf2
- 1.Qb1?
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...c2!
- 1...Kf2
- 1.Qd3?
- 1...Kf2
- 2.Qxe2#
- 1...Rxf5
- 2.Qxf5#
- 1...c2!
- 1...Kf2
- 1.Kh2?
- Keys
- 1.Rh1!
- 1...Kf2
- 2.Rxf4#
- 1...Rxf5
- 2.Qxf5#
- 1...e1Q
- 2.Qg2#
- 1...e1S
- 2.Rf1#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...Kf2
- 1.Rh1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- Refutation
- K(d);N_SPINR(e),S_FLIGHT
- Try
- R(A);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE::QAB1(B)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE::QAB1(B)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE::QAB1(B)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE,XR(A)::QAB1(B)
- P(a);OGATE::QAB1(B)
- Refutation
- P(a);
- Try
- R(A);
- Vars
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE::QAB1(B)
- Refutation
- K(d);P-FLIGHT,P_SPINP(a)
- Try
- R(D);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- Refutation
- R(e);N_SPINR(e),XR(D)
- Try
- R(D);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- R(e);OGATEB::R(D),XR(e)
- Refutation
- R(e);N_SPINR(e),XR(D)
- Try
- R(D);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- R(e);OGATEB::R(D),XR(e)
- Refutation
- R(e);N_SPINR(e),XR(D)
- Try
- Q(B);
- Vars
- K(d);N_GUARD,P-FLIGHT::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- Refutation
- P(b);
- Try
- Q(B);P_PINP(c)
- Vars
- K(d);N_GUARD,N_SPINP(c),P-FLIGHT::QAR1(B),XP(a)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- Refutation
- P(b);
- Try
- Actual
- R(A);
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINP(a)::R(D),XR(e)
- R(e);N_SPINR(e),OGATE,XR(D)::QAR2(B),XR(e)
- P(a);OGATE::QAB1(B)
- P(a);N_GUARD::R(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).