MESON Chess Problem Database
Problem Display
PID: 194208 (K5b1/4R2p/N1P5/8/B1kn3P/R3p2q/PB2P1Qn/1rrN4 w - - 0 1)
Berkel, Adrian V
Brisbane Courier, 1917
#2
12 + 9
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Sxe3#
- 1...Qg4
- 2.Sxe3#
- 1...Qf5
- 2.Sxe3#
- 1...Qd7
- 2.Sxe3#
- 1...Qxh4
- 2.Sxe3#
- 1...Rxb2
- 2.Sxb2#
- 1...Rxd1
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...Shf3
- 2.Sxe3#
- 1...Sb3
- 2.axb3#
- 1...Sdf3
- 2.Sxe3#
- 1...Sb5
- 2.Bb3#
- 1...Sf5
- 2.Qxg8#
- 1...Sxc6
- 2.Qxc6#
- 1...Qxg2
- Tries
- 1.Bb3+?
- 1...Kb5
- 2.Rb7#
- 1...Sxb3!
- 1...Kb5
- 1.Bb5+?
- 1...Sxb5
- 2.Ra4#
- 1...Kxb5!
- 1...Sxb5
- 1.Re5?
- threat
- 2.Rc5#
- 1...Qf5
- 2.Sxe3#
- 1...Bd5
- 2.Qxd5#
- 1...Sb3
- 2.Bxb3#
- 2.Bb5#
- 2.axb3#
- 1...Se6
- 2.Bb3#
- 2.Bb5#
- 2.Qd5#
- 1...Qc8+!
- threat
- 1.Qe4?
- threat
- 2.Qxd4#
- 1...Qxh4
- 2.Sxe3#
- 1...Rxb2
- 2.Sxb2#
- 1...Rxd1
- 2.Rc3#
- 1...Qg4
- 2.Sxe3#
- 1...Qd7
- 2.Sxe3#
- 1...Rc3
- 2.Rxc3#
- 1...Sf3
- 2.Sxe3#
- 1...Qc8+!
- threat
- 1.Qxg8+?
- 1...Qe6
- 2.Sxe3#
- 1...Se6!
- 1...Qe6
- 1.Bb3+?
- Keys
- 1.Rd7!
- threat
- 2.Rxd4#
- 1...Qxd7
- 2.Sxe3#
- 1...Qxh4
- 2.Sxe3#
- 1...Rxb2
- 2.Sxb2#
- 1...Rxd1
- 2.Rc3#
- 1...Sxe2
- 2.Qxe2#
- 1...Sxc6
- 2.Qxc6#
- 1...Qg4
- 2.Sxe3#
- 1...Rc3
- 2.Rxc3#
- 1...Bd5
- 2.Qxd5#
- 1...Shf3
- 2.Sxe3#
- 1...Sc2
- 2.Rc3#
- 1...Sb3
- 2.axb3#
- 1...Sdf3
- 2.Sxe3#
- 1...Sb5
- 2.Bb3#
- 1...Sf5
- 2.Qxg8#
- 1...Se6
- 2.Qd5#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(e);N_GUARD,P_PINP(J),XQ(E)::S(A),XP(d)
- Q(e);N_GUARD::S(A),XP(d)
- Q(e);N_GUARD,XP(H)::S(A),XP(d)
- R(a);XB(C)::S(A),XR(a)
- R(b);N_GUARD,XS(A)::R1(F)
- R(b);N_GUARD::R1(F),XR(b)
- S(c);S_CUTQ(e)::S(A),XP(d)
- S(g);OGATE::P(B),XS(g)
- S(g);S_CUTQ(e)::S(A),XP(d)
- S(g);N_GUARD,SBLOCK::B(G)
- S(g);N_GUARD,S_CUTQ(e)::QAB(E),XB(i)
- S(g);OGATE,XP(J)::QAR2(E),XS(g)
- Tries
- Try
- B(G);CHECK
- Vars
- K(f);S_FLIGHT::R(K)
- Refutation
- S(g);XB(G)
- Try
- B(G);CHECK
- Vars
- S(g);SBLOCK,XB(G)::R(F)
- Refutation
- K(f);S_FLIGHT,XB(G)
- Try
- R(K);
- Threat
- R1(K)
- Vars
- Q(e);N_GUARD::S(A),XP(d)
- B(i);N_GUARD,P_PINP(J)::QAB1(E),XB(i)
- Refutation
- Q(e);CHECK
- Try
- Q(E);P_PINS(g)
- Threat
- QAR1(E),XS(g)
- Vars
- Q(e);N_GUARD,XP(H)::S(A),XP(d)
- R(a);XB(C)::S(A),XR(a)
- R(b);N_GUARD,XS(A)::R1(F)
- Q(e);N_GUARD::S(A),XP(d)
- R(b);N_GUARD::R1(F),XR(b)
- S(c);S_CUTQ(e)::S(A),XP(d)
- Refutation
- Q(e);CHECK
- Try
- Q(E);CHECK,XB(i)
- Vars
- Q(e);P_SPINQ(e)::S(A),XP(d)
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- R(K);
- Threat
- R1(K),XS(g)
- Vars
- Q(e);N_GUARD,XR(K)::S(A),XP(d)
- Q(e);N_GUARD,XP(H)::S(A),XP(d)
- R(a);XB(C)::S(A),XR(a)
- R(b);N_GUARD,XS(A)::R1(F)
- S(g);OGATE,XP(D)::QAB(E),XS(g)
- S(g);OGATE,XP(J)::QAR2(E),XS(g)
- Q(e);N_GUARD::S(A),XP(d)
- R(b);N_GUARD::R1(F),XR(b)
- B(i);N_GUARD,P_PINP(J)::QAB1(E),XB(i)
- S(c);S_CUTQ(e)::S(A),XP(d)
- S(g);S_CUTR(b)::R1(F)
- S(g);OGATE::P(B),XS(g)
- S(g);S_CUTQ(e)::S(A),XP(d)
- S(g);N_GUARD,SBLOCK::B(G)
- S(g);N_GUARD,S_CUTQ(e)::QAB(E),XB(i)
- S(g);S_CUTB(i)::QAB1(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).