MESON Chess Problem Database
Problem Display
PID: 53539 (KQ2b3/nnR5/5kp1/3Pq1p1/1p2p1p1/2RN2N1/1B6/8 w - - 0 1)
Rubens, Nathan
Chess Life, 1955
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.R3c6#
- 1...Qd6
- 2.R3c6#
- 1...Qxc7
- 2.Rxc7#
- 1...Qxd5
- 2.R3c6#
- 1...Qf5
- 2.R3c6#
- 1...Qe6
- 2.R3c6#
- 1...Ba4
- 2.Qf8#
- 2.Qh8#
- 1...Bb5
- 2.Qf8#
- 2.Qh8#
- 1...Bc6
- 2.Qf8#
- 2.Qh8#
- 1...Bd7
- 2.Qf8#
- 1...Bf7
- 2.Qh8#
- 1...Qf4
- Tries
- 1.Rc1?
- threat
- 2.Bxe5#
- 2.Rf1#
- 1...exd3
- 2.Rf1#
- 1...Bd7
- 2.Qf8#
- 1...Bf7
- 2.Bxe5#
- 2.Qh8#
- 1...Qc3
- 2.Rf1#
- 1...Qd4
- 2.Bxd4#
- 2.Rf1#
- 1...Sc6
- 2.Rf1#
- 1...Sd6
- 2.Bxe5#
- 2.Qd8#
- 1...Qxb2!
- threat
- 1.Rc2?
- threat
- 2.Bxe5#
- 2.Rf2#
- 1...exd3
- 2.Rf2#
- 1...Bd7
- 2.Qf8#
- 1...Bf7
- 2.Bxe5#
- 2.Qh8#
- 1...Qc3
- 2.Rf2#
- 1...Qd4
- 2.Bxd4#
- 2.Rf2#
- 1...Sc6
- 2.Rf2#
- 1...Sd6
- 2.Bxe5#
- 2.Qd8#
- 1...e3
- 2.Bxe5#
- 1...Qxb2!
- threat
- 1.R3c6+?
- 1...Bxc6
- 2.Bxe5#
- 2.Qf8#
- 2.Qh8#
- 1...Sd6
- 2.Bxe5#
- 2.Rxd6#
- 2.Qd8#
- 1...Sxc6!
- 1...Bxc6
- 1.Rf7+?
- 1...Bxf7
- 2.Qxe5#
- 1...Kxf7!
- 1...Bxf7
- 1.Qd8+?
- 1...Qe7
- 2.Qxe7#
- 1...Sxd8!
- 1...Qe7
- 1.Qxe8?
- threat
- 2.Rf7#
- 2.Qf7#
- 2.Qxe5#
- 2.Qf8#
- 2.Qh8#
- 1...Qxc3
- 2.Rf7#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 2.Qf8#
- 2.Qh8#
- 1...Qxg3
- 2.Rf7#
- 2.Qf7#
- 2.Qe6#
- 2.Qf8#
- 1...Qxc7
- 2.Rc6#
- 2.Rxc7#
- 1...Qxd5
- 2.R3c6#
- 2.Qe7#
- 1...exd3
- 2.Rf7#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Qe7
- 2.R3c6#
- 2.Qxe7#
- 1...Qd4
- 2.Rf7#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 2.Qf8#
- 2.Qh8#
- 1...Qf4
- 2.R3c6#
- 2.Rf7#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 2.Qf8#
- 2.Qh8#
- 1...Qd6
- 2.R3c6#
- 2.Rf7#
- 2.Qf7#
- 2.Qh8#
- 1...Qf5
- 2.R3c6#
- 2.Rf7#
- 2.Qf7#
- 2.Qe7#
- 2.Qf8#
- 2.Qh8#
- 1...Qe6
- 2.R3c6#
- 2.Qxe6#
- 2.Qh8#
- 1...Sc6
- 2.Rf7#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Sd6
- 2.Qxe5#
- 2.Qh8#
- 1...Sd8
- 2.Qxe5#
- 2.Qh8#
- 1...Qxe8+!
- threat
- 1.Rc1?
- Keys
- 1.Sf2!
- threat
- 2.Sxg4#
- 1...Qxg3
- 2.Rf3#
- 1...Qxc7
- 2.Rxc7#
- 1...Qxd5
- 2.R3c6#
- 1...Qf4
- 2.Rf3#
- 2.R3c6#
- 1...Qf5
- 2.Rf3#
- 2.R3c6#
- 1...Qe6
- 2.Rf3#
- 2.R3c6#
- 1...Qe7
- 2.Rf3#
- 1...Bd7
- 2.Qf8#
- 1...Bf7
- 2.Qh8#
- threat
- 1.Sf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(d);::B(A)+R(B),DCHECK
- Q(d);S_CUTB(j),S_CUTS(h),S_CUTS(i)::B(A)+R(B)
- Q(d);OGATE,XR(F)::B(A)+R(B),XQ(d)
- Q(d);XP(E)::B(A)+R(B),DCHECK
- B(j);OGATE::QAR2(H)
- B(j);OGATE::QAB(H)
- Tries
- Try
- R(B);P_PINQ(d)
- Threat
- DUALS(2)
- Vars
- P(b);XS(C)::R(B)
- B(j);OGATE::QAR2(H)
- Q(d);::R(B)
- S(h);::R(B)
- Refutation
- Q(d);N_SPINQ(d),XB(A)
- Try
- R(B);P_PINQ(d)
- Threat
- DUALS(2)
- Vars
- P(b);XS(C)::R(B)
- B(j);OGATE::QAR2(H)
- Q(d);::R(B)
- S(h);::R(B)
- P(b);::B(A),XQ(d)
- Refutation
- Q(d);N_SPINQ(d),XB(A)
- Try
- R(B);CHECK,P_PINQ(d)
- Refutation
- S(h);XR(B)
- Try
- R(F);CHECK
- Vars
- B(j);SBLOCK,XR(F)::QAB1(H),XQ(d)
- Refutation
- K(f);P-FLIGHT,XR(F)
- Try
- Q(H);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAB1(H),XQ(d)
- Refutation
- S(i);XQ(H)
- Try
- Q(H);XB(j)
- Threat
- DUALS(5)
- Refutation
- Q(d);CHECK,XQ(H)
- Try
- Actual
- S(C);
- Threat
- S(C),XP(c)
- Vars
- Q(d);XS(D)::B(A)+R(B),DCHECK
- Q(d);OGATE,XR(F)::B(A)+R(B),XQ(d)
- Q(d);XP(E)::B(A)+R(B),DCHECK
- Q(d);::B(A)+R(B),DCHECK
- B(j);OGATE::QAR2(H)
- B(j);OGATE::QAB(H)
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).