MESON Chess Problem Database
Problem Display
PID: 51569 (3nK3/2p1RP1p/8/Q2B1PB1/3k1r1q/6p1/2P1p2N/1N1br3 w - - 0 1)
Fenner, A Jack
The Guardian, 1964
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxh2
- 2.Bf6#
- 1...Qh3
- 2.Bf6#
- 1...Qg4
- 2.Bf6#
- 1...Qh5
- 2.Bf6#
- 1...Rf1
- 2.Be3#
- 1...Rf2
- 2.Be3#
- 1...Rf3
- 2.Sxf3#
- 1...Re4
- 2.Sf3#
- 1...Rg4
- 2.Sf3#
- 2.Be3#
- 1...Rxf5
- 2.Be3#
- 1...c5
- 2.Qd2#
- 1...Qxh2
- Tries
- 1.Ba2?
- threat
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 2.Qe5#
- 1...Rxf5
- 2.Be3#
- 2.Qc3#
- 2.Qb4#
- 1...Bxc2
- 2.Qc3#
- 2.Qd5#
- 1...Sxf7
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 1...Rf3
- 2.Sxf3#
- 2.Qb4#
- 2.Qd5#
- 2.Qe5#
- 1...Re4
- 2.Sf3#
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 1...Sc6
- 2.Qc3#
- 2.Qd5#
- 1...c5
- 2.Qd2#
- 2.Qc3#
- 2.Qxd8#
- 1...c6
- 2.Qc3#
- 2.Qb4#
- 2.Qe5#
- 1...Se6!
- threat
- 1.Bb3?
- threat
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 2.Qe5#
- 1...Rxf5
- 2.Be3#
- 2.Qc3#
- 2.Qb4#
- 1...Bxc2
- 2.Qc3#
- 2.Qd5#
- 1...Sxf7
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 1...Rf3
- 2.Sxf3#
- 2.Qb4#
- 2.Qd5#
- 2.Qe5#
- 1...Re4
- 2.Sf3#
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 1...Sc6
- 2.Qc3#
- 2.Qd5#
- 1...c5
- 2.Qd2#
- 2.Qc3#
- 2.Qxd8#
- 2.Qa1#
- 1...c6
- 2.Qc3#
- 2.Qb4#
- 2.Qe5#
- 1...Se6!
- threat
- 1.Bc6?
- threat
- 2.Qc3#
- 2.Qb4#
- 2.Qd5#
- 1...Kc4
- 2.Qc3#
- 1...Rxf5
- 2.Qc3#
- 2.Qb4#
- 1...Bxc2
- 2.Qc3#
- 2.Qd5#
- 1...Se6
- 2.Qc3#
- 1...Rf3
- 2.Qb4#
- 2.Qd5#
- 1...Sxc6!
- threat
- 1.Re5?
- threat
- 2.Qc3#
- 1...Rf3
- 2.Sxf3#
- 1...Kxe5!
- threat
- 1.Qb5?
- threat
- 2.Qc4#
- 2.c3#
- 1...Bxc2
- 2.Qc4#
- 1...c5
- 2.Qd3#
- 2.Qc4#
- 1...Rf3
- 2.Sxf3#
- 2.Qc4#
- 1...Se6!
- threat
- 1.Ba2?
- Keys
- 1.Rd7!
- threat
- 2.Qc3#
- 1...Re4+
- 2.Be6#
- 1...Ke3
- 2.Qc5#
- 1...Ke5
- 2.Bc6#
- 1...Rf3
- 2.Sxf3#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(g);N_GUARD,XS(C)::B(G)
- Q(g);N_GUARD::B(G)
- Q(g);N_GUARD,P_PINP(I)::B(G)
- R(f);OGATE::B(G)
- R(f);N_GUARD::S(C),XR(f)
- R(f);N_GUARD,P_PINR(H)::S(C)
- R(f);OGATE,XP(F)::B(G)
- P(h);SBLOCK::QAR2(D)
- Tries
- Try
- B(E);
- Threat
- DUALS(4)
- Refutation
- S(j);
- Try
- B(E);
- Threat
- DUALS(4)
- Refutation
- S(j);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- K(e);P-FLIGHT::QAR1(D)
- S(j);::QAB1(D)
- Refutation
- S(j);XB(E)
- Try
- R(H);
- Threat
- QAB1(D)
- Vars
- R(f);N_GUARD::S(C),XR(f)
- Refutation
- K(e);S_FLIGHT,XR(H)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(a);XP(B)::QAR1(D)
- Refutation
- S(j);
- Try
- Actual
- R(H);
- Threat
- QAB1(D)
- Vars
- R(f);CHECK,SBLOCK::R(H)+B(E)
- K(e);P_SPINR(f),S_FLIGHT::QAB(D)
- K(e);S_FLIGHT::QAR(D)+B(E)
- R(f);N_GUARD::S(C),XR(f)
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).