MESON Chess Problem Database
Problem Display
PID: 133402 (bN6/1Q1Rp1n1/1p2kp1N/3n3p/2r2P2/3R4/BBr2p2/6bK w - - 0 1)
Goethart, Gerhardus Hendrik
Tijdschrift vd NSB, 1930
#2
9 + 12
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Bxd5#
- 1...Ra4
- 2.Bxd5#
- 1...Rb4
- 2.Bxd5#
- 1...Re4
- 2.Bxd5#
- 1...Rxf4
- 2.Bxd5#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Bxd5#
- 2.Re3#
- 1...Rc7
- 2.Bxd5#
- 2.Re3#
- 1...Rc8
- 2.Bxd5#
- 2.Re3#
- 1...Sc3
- 2.Rxe7#
- 1...Se3
- 2.Rxe3#
- 2.Rxe7#
- 1...Sb4
- 2.Re3#
- 2.Rxe7#
- 1...Sxf4
- 2.Re3#
- 2.Rxe7#
- 1...Sc7
- 2.Re3#
- 1...Se8
- 2.f5#
- 1...Rc3
- Tries
- 1.Sc6?
- threat
- 2.Sd8#
- 1...Rxc6
- 2.Bxd5#
- 2.Re3#
- 1...Bxb7!
- threat
- 1.Bxc4?
- threat
- 2.Bxd5#
- 2.Re3#
- 1...Bxb7
- 2.Re3#
- 1...f1Q
- 2.Bxd5#
- 1...f1S
- 2.Bxd5#
- 1...f1B
- 2.Bxd5#
- 1...f1R
- 2.Bxd5#
- 1...Re2
- 2.Bxd5#
- 1...Rc3
- 2.Bxd5#
- 1...Sf5
- 2.Bxd5#
- 1...Rxc4!
- threat
- 1.Re3+?
- 1...Re4
- 2.Bxd5#
- 2.Rxe4#
- 1...Sxe3!
- 1...Re4
- 1.R7xd5?
- threat
- 2.Qd7#
- 1...Rc7
- 2.Re3#
- 2.Re5#
- 2.Rd6#
- 1...Bxb7!
- threat
- 1.Rd6+?
- 1...exd6
- 2.Qd7#
- 2.Qf7#
- 1...Kxd6!
- 1...exd6
- 1.Rxe7+?
- 1...Kd6
- 2.Rxd5#
- 1...Sxe7!
- 1...Kd6
- 1.Qc6+?
- 1...Rxc6
- 2.Bxd5#
- 2.Re3#
- 1...Bxc6!
- 1...Rxc6
- 1.Qxa8?
- threat
- 2.Qxd5#
- 1...Sxf4
- 2.Re3#
- 2.Qe4#
- 2.Qc6#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Bxd5#
- 2.Re3#
- 1...Sc3
- 2.Qc6#
- 1...Se3
- 2.Rxe3#
- 2.Qe4#
- 2.Qc6#
- 1...Sb4
- 2.Re3#
- 2.Qe4#
- 1...Sc7
- 2.Re3#
- 2.Qe4#
- 2.Qc6#
- 1...Rd4!
- threat
- 1.Sc6?
- Keys
- 1.Qc8!
- threat
- 2.Qg8#
- 1...Sc3+
- 2.Rb7#
- 1...Se3+
- 2.Rb7#
- 1...Sb4+
- 2.Rb7#
- 1...Sxf4+
- 2.Rb7#
- 1...Sc7+
- 2.R7d5#
- 1...Rxc8
- 2.Re3#
- 1...Se8
- 2.f5#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(d);OGATE,P_SPINS(e)::B(B),XS(e)
- R(d);OGATE,P_SPINS(e),XP(E)::B(B),XS(e)
- R(d);N_GUARD,P_SPINS(e)::R(D)
- S(e);N_GUARD,P_PINQ(G),P_SPINR(d)::R1(H),XP(j)
- S(e);N_GUARD,P_PINQ(G),P_SPINR(d)::R(D)
- S(k);N_GUARD::P(E)
- Tries
- Try
- S(I);
- Threat
- S(I)
- Refutation
- B(l);XQ(G)
- Try
- B(B);P_PINS(e),XR(d)
- Threat
- DUALS(2)
- Vars
- B(l);XQ(G)::R(D)
- P(c);::B(B),XS(e)
- R(b);::B(B),XS(e)
- S(k);::B(B),XS(e)
- Refutation
- R(b);N_SPINS(e),XB(B)
- Try
- R(D);CHECK
- Refutation
- S(e);P_PINQ(G),P_SPINR(d),XR(D)
- Try
- R(H);XS(e)
- Threat
- QAB1(G)
- Refutation
- B(l);P_PINR(H),XQ(G)
- Try
- R(H);CHECK
- Refutation
- K(h);P-FLIGHT,P_SPINS(e),XR(H)
- Try
- R(H);CHECK,XP(j)
- Vars
- K(h);P-FLIGHT,P_SPINS(e)::R1(D),XS(e)
- Refutation
- S(e);P_PINQ(G),P_SPINR(d),XR(H)
- Try
- Q(G);CHECK
- Refutation
- B(l);XQ(G)
- Try
- Q(G);XB(l)
- Threat
- QAB1(G),XS(e)
- Vars
- R(d);N_GUARD,P_SPINS(e)::R(D)
- S(e);P_SPINR(d)::QAR2(G)
- Refutation
- R(d);P_SPINS(e)
- Try
- Actual
- Q(G);
- Threat
- QAB(G)
- Vars
- S(e);CHECK,P_SPINR(d)::QAB(G)+R(H)
- S(e);CHECK,P_SPINR(d),XP(E)::QAB(G)+R(H)
- R(d);N_GUARD,P_SPINS(e),XQ(G)::R(D)
- S(k);N_GUARD::P(E)
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).