MESON Chess Problem Database
Problem Display
PID: 142051 (nB6/2np4/1pr1R2K/1pp3p1/1P3k2/4Np2/3Q1P2/1B6 w - - 0 1)
Melvin, Herbert A ('Hamel' or Zaak, HA)
Hastings Observer, 1941-1942
#2
8 + 10
| 14867 | BCPS Library | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Qxd6#
- 1...cxb4
- 2.Qd4#
- 1...c4
- 2.Qd4#
- 1...g4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sd5#
- 2.Sf5#
- 1...d6
- 2.Re4#
- 1...Rd6
- Tries
- 1.Kh5?
- threat
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sd5#
- 2.Sf5#
- 2.Re4#
- 1...dxe6
- 2.Sc4#
- 2.Sg4#
- 1...Rd6
- 2.Sg2#
- 2.Sd5#
- 2.Re4#
- 2.Qxd6#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxc4#
- 2.Sg4#
- 2.Sd5#
- 2.Sf5#
- 2.Re4#
- 2.Qd4#
- 1...g4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Sd5#
- 2.Sf5#
- 2.Re4#
- 1...d5
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 1...Rxe6!
- threat
- 1.Bxc7+?
- 1...Rd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Rxc7
- 2.Re4#
- 2.Qd6#
- 1...d6
- 2.Re4#
- 1...Sxc7!
- 1...Rd6
- 1.Rxc6?
- threat
- 2.Qd6#
- 1...Ke5
- 2.Sg4#
- 2.Qd6#
- 1...d6
- 2.Qxd6#
- 1...d5!
- threat
- 1.Rf6+?
- 1...Ke5
- 2.Sg4#
- 2.Qc3#
- 2.Qb2#
- 1...Rxf6+!
- 1...Ke5
- 1.Qc3?
- threat
- 2.Qe5#
- 2.Qf6#
- 1...dxe6
- 2.Qf6#
- 1...d6
- 2.Re4#
- 2.Rf6#
- 2.Qf6#
- 1...Rxe6+!
- threat
- 1.Qb2?
- threat
- 2.Qe5#
- 2.Qf6#
- 1...dxe6
- 2.Qf6#
- 1...d6
- 2.Re4#
- 2.Rf6#
- 2.Qf6#
- 1...Rxe6+!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...dxe6
- 2.Qe4#
- 1...d5
- 2.Qf5#
- 1...Rxe6+!
- threat
- 1.Qd3?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...dxe6
- 2.Qe4#
- 1...d5
- 2.Qf5#
- 1...Rxe6+!
- threat
- 1.Qd5?
- threat
- 2.Qe4#
- 2.Qe5#
- 2.Qf5#
- 2.Qxg5#
- 1...dxe6
- 2.Qe4#
- 2.Qxg5#
- 1...g4
- 2.Qe4#
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...d6
- 2.Re4#
- 2.Rf6#
- 2.Qe4#
- 2.Qf5#
- 2.Qxg5#
- 1...Rxe6+!
- threat
- 1.Kh5?
- Keys
- 1.Rd6!
- 1...Rxd6+
- 2.Qxd6#
- 1...Ke5
- 2.Sg4#
- 1...cxb4
- 2.Qd4#
- 1...Sd5
- 2.Rf6#
- 1...Sa6
- 2.Rf6#
- 1...Se6
- 2.Rd4#
- 1...Se8
- 2.Rf6#
- 1...c4
- 2.Qd4#
- 1...g4
- 2.Sc4#
- 1...Rxd6+
- 1.Rd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD,N_SPINS(h)::QAB(B),XR(g)
- P(d);N_GUARD,XP(E)::QAR2(B)
- P(d);N_GUARD::QAR2(B)
- P(i);N_PINR(F),N_SPINS(h)::R1(F)
- Tries
- Try
- K(G);N_SPINR(F),P-FLIGHT
- Threat
- DUALS(8)
- Refutation
- R(g);XR(F)
- Try
- B(H);CHECK,XS(h)
- Vars
- P(i);N_PINR(F),P_SPINP(i)::R1(F)
- Refutation
- S(j);XB(H)
- Try
- R(F);N_SPINR(F),XR(g)
- Threat
- QAB(B)
- Vars
- P(i);N_SPINS(h)::QAB(B),XP(i)
- Refutation
- P(i);
- Try
- R(F);CHECK
- Refutation
- R(g);CHECK,XR(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(i);XR(F)::QAR2(B)
- Refutation
- R(g);CHECK,XR(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(i);XR(F)::QAR2(B)
- Refutation
- R(g);CHECK,XR(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(i);XR(F)::QAR1(B)
- P(i);::QAR1(B)
- Refutation
- R(g);CHECK,XR(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(i);XR(F)::QAR1(B)
- P(i);::QAR1(B)
- Refutation
- R(g);CHECK,XR(F)
- Try
- Q(B);
- Threat
- DUALS(4)
- Refutation
- R(g);CHECK,XR(F)
- Try
- Actual
- R(F);N_PINS(h)
- Vars
- R(g);CHECK,OGATE,XR(F)::QAB(B),XR(g)
- K(b);S_FLIGHT::S(D)
- P(d);N_GUARD,XP(E)::QAR2(B)
- S(h);::B(H)+R(F),DCHECK
- S(h);N_PINR(F)::B(H)+R(F),DCHECK
- P(d);N_GUARD::QAR2(B)
- P(e);SBLOCK::QAB(B)+S(D)
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).