MESON Chess Problem Database
Problem Display
PID: 190154 (3R4/2p5/2p5/1Ppn4/3k1Pb1/4N3/nKBB4/6Q1 w - - 0 1)
van der Ven, AMA
Tijdschrift vd NSB, 1913
#2
8 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Bc8
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...cxb5
- 2.Rxd5#
- 1...Bd1
- Tries
- 1.Kxa2?
- threat
- 2.Qa1#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...Bd1
- 2.Qg7#
- 1...Bd7!
- threat
- 1.Kb3?
- threat
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...c4+
- 2.Sxc4#
- 1...Bd7
- 2.Sf5#
- 1...Bd1
- 2.Sxd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Be2
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Bf3
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Bh3
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Bf5
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sxf5#
- 2.Qg7#
- 1...Bh5
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Be6
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Bc8
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sc4#
- 2.Sg4#
- 2.Sxd5#
- 2.Sf5#
- 2.Qg7#
- 1...Sc1+!
- threat
- 1.Bb1?
- 1...cxb5
- 2.Rxd5#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Bc8
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...Bd7!
- 1...cxb5
- 1.Bf5?
- 1...cxb5
- 2.Rxd5#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...Bxf5!
- 1...cxb5
- 1.Rd6?
- 1...cxb5
- 2.Rxd5#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...Bd7
- 2.Qg7#
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Bc8
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...cxd6!
- 1...cxb5
- 1.Rd7?
- 1...cxb5
- 2.Rxd5#
- 1...c4
- 2.Sd1#
- 2.Sf1#
- 2.Sg2#
- 2.Sxg4#
- 2.Sxd5#
- 2.Sf5#
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...Bxd7!
- 1...cxb5
- 1.Qf1?
- threat
- 2.Qd3#
- 2.Qc4#
- 1...cxb5
- 2.Rxd5#
- 2.Qd3#
- 1...c4
- 2.Qxc4#
- 1...Bf5
- 2.Sxf5#
- 2.Qc4#
- 1...Sc1
- 2.Qc4#
- 1...Sb4
- 2.Qc4#
- 1...Be2!
- threat
- 1.Qh1?
- threat
- 2.Qe4#
- 2.Qh8#
- 1...Bd7
- 2.Qe4#
- 1...Bf3
- 2.Qh8#
- 1...Bh3
- 2.Qe4#
- 1...Bf5
- 2.Qh8#
- 1...Bh5
- 2.Qe4#
- 1...Sc3
- 2.Qh8#
- 1...c4!
- threat
- 1.bxc6?
- threat
- 2.Rxd5#
- 1...Bf3
- 2.Qg7#
- 1...Be6
- 2.Qg7#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...Bd7!
- threat
- 1.Kxa2?
- Keys
- 1.f5!
- 1...Ke5
- 2.Sxg4#
- 1...Bxf5
- 2.Qg7#
- 1...cxb5
- 2.Rxd5#
- 1...c4
- 2.Sxg4#
- 1...Bd1
- 2.Qg7#
- 1...Be2
- 2.Qg7#
- 1...Bf3
- 2.Qg7#
- 1...Bh3
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Sc1
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sb4
- 2.Bc3#
- 1...Ke5
- 1.f5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- Tries
- Try
- K(B);P-FLIGHT,XS(a)
- Threat
- QAB(A)
- Vars
- B(c);OGATE::QAB(A)
- Refutation
- B(c);N_SPINS(e)
- Try
- K(B);P-FLIGHT
- Threat
- DUALS(7)
- Vars
- P(d);CHECK::QAB(A)+S(E),XP(d)
- B(c);N_SPINS(e)::QAB(A)+S(E),DCHECK
- Refutation
- S(a);CHECK
- Try
- B(C);
- Vars
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- Refutation
- B(c);N_SPINS(e)
- Try
- B(C);
- Vars
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- Refutation
- B(c);XB(C)
- Try
- R(H);
- Vars
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- Refutation
- P(g);N_SPINS(e),XR(H)
- Try
- R(H);
- Vars
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
- Refutation
- B(c);N_SPINS(e),XR(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(d);::QAR1(A),XP(d)
- S(a);::QAR1(A)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);N_SPINS(e)::QAR1(A)
- B(c);::QAB(A)
- B(c);::QAR1(A)
- S(a);::QAB(A)
- Refutation
- P(d);
- Try
- P(G);XP(f)
- Threat
- R1(H),XS(e)
- Vars
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D),XS(a)
- S(a);N_GUARD::B(D)
- Refutation
- B(c);N_SPINS(e)
- Try
- Actual
- P(F);
- Vars
- K(b);N_SPINS(e),S_FLIGHT::S(E),XB(c)
- B(c);OGATE,XP(F)::QAB(A)
- P(f);N_GUARD,XP(G)::R1(H),XS(e)
- P(d);SBLOCK::QAB(A)+S(E),XB(c)
- B(c);OGATE::QAB(A)
- S(a);N_GUARD::B(D)
- S(a);N_GUARD::B(D),XS(a)
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).