MESON Chess Problem Database
Problem Display
PID: 32854 (8/1qp2PBp/6pK/1Qbr1kN1/R4Np1/8/6P1/8 w - - 0 1)
Broit, GA
De Problemist, 1929
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.f8Q#
- 2.f8R#
- 1...Rd2
- 2.f8Q#
- 2.f8R#
- 1...Rd3
- 2.f8Q#
- 2.f8R#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Rd7
- 2.Qxd7#
- 1...Bg1
- 2.f8Q#
- 2.f8R#
- 1...Bf2
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.f8Q#
- 2.f8R#
- 1...Bb6
- 2.f8Q#
- 2.f8R#
- 1...Bd6
- 2.Qd7#
- 1...Ba7
- 2.f8Q#
- 2.f8R#
- 1...Rd1
- Tries
- 1.Se2?
- threat
- 2.Sg3#
- 2.Rf4#
- 1...Rd3
- 2.Rf4#
- 2.f8Q#
- 2.f8R#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Bf2
- 2.Rf4#
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.Sg3#
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 1...Bd6
- 2.Qd7#
- 1...g3
- 2.Sxg3#
- 2.Rf4#
- 1...Bb4!
- threat
- 1.Sxd5?
- threat
- 2.Se3#
- 2.Se7#
- 2.Rf4#
- 2.Qd3#
- 2.Qd7#
- 1...Qxb5
- 2.Rf4#
- 1...Bb4
- 2.Qf1#
- 2.Qd3#
- 2.Qd7#
- 1...Qa6
- 2.Se3#
- 2.Se7#
- 2.Rf4#
- 1...Qc6
- 2.Se3#
- 2.Se7#
- 2.Rf4#
- 2.Qd3#
- 2.Qb1#
- 1...Qc8
- 2.Se3#
- 2.Se7#
- 2.Rf4#
- 2.Qd3#
- 2.Qb1#
- 1...Qb6
- 2.Se3#
- 2.Se7#
- 2.Rf4#
- 2.Qd3#
- 1...Be3
- 2.Sxe3#
- 2.Se7#
- 2.Qd3#
- 2.Qd7#
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 2.Qd7#
- 1...Bd6
- 2.Se3#
- 2.Se7#
- 2.Qd3#
- 2.Qd7#
- 1...Be7
- 2.Se3#
- 2.Sxe7#
- 2.Rf4#
- 2.Qf1#
- 2.Qd3#
- 2.Qd7#
- 1...c6
- 2.Se3#
- 2.Rf4#
- 2.Qd3#
- 1...Qxd5!
- threat
- 1.Sh5?
- threat
- 2.Sg3#
- 2.Rf4#
- 1...Bb4
- 2.Qf1#
- 1...Rd3
- 2.Rf4#
- 2.f8Q#
- 2.f8R#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Bf2
- 2.Rf4#
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.Sg3#
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 1...Bd6
- 2.Qd7#
- 1...g3
- 2.Sxg3#
- 2.Rf4#
- 1...gxh5!
- threat
- 1.Sfe6?
- threat
- 2.Rf4#
- 1...Bb4
- 2.Qf1#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 1...Bd6!
- threat
- 1.Sxg6?
- threat
- 2.Sh4#
- 2.Rf4#
- 1...Bb4
- 2.Qf1#
- 1...Qa6
- 2.Rf4#
- 1...Qc6
- 2.Rf4#
- 1...Qb6
- 2.Rf4#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Rd6
- 2.Rf4#
- 1...Bf2
- 2.Se7#
- 2.Rf4#
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.Sh4#
- 2.Se7#
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 1...Bd6
- 2.Sh4#
- 2.Qd7#
- 1...hxg6!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 2.Qe6#
- 1...Rd4
- 2.Qe5#
- 1...Bb4
- 2.Qe4#
- 1...Bd4
- 2.Qe4#
- 1...Qa6
- 2.Qe4#
- 1...Qc6
- 2.Qe4#
- 1...Qc8
- 2.Qe4#
- 1...Qb1
- 2.Qe6#
- 1...Qb6
- 2.Qe4#
- 1...Rd1
- 2.Qe5#
- 2.Qe6#
- 1...Rd2
- 2.Qe5#
- 2.Qe6#
- 1...Rd3
- 2.Qe5#
- 2.Qe6#
- 1...Re5
- 2.Qxe5#
- 1...Rd6
- 2.Qe5#
- 1...Rd7
- 2.Qe5#
- 2.Qe6#
- 1...Rd8
- 2.Qe5#
- 2.Qe6#
- 1...Be3
- 2.f8Q#
- 2.f8R#
- 1...g3
- 2.Qe6#
- 1...Qb4!
- threat
- 1.Se2?
- Keys
- 1.Sfh3!
- threat
- 2.Rf4#
- 1...gxh3
- 2.g4#
- 1...Bb4
- 2.Qf1#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.Qd3#
- 1...Bd6
- 2.Qd7#
- threat
- 1.Sfh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(c);P_SPINB(b)::P=Q
- R(c);N_GUARD,P_SPINB(b)::QAB(D),XR(c)
- B(b);N_GUARD,P_SPINR(c)::P=Q
- B(b);P_SPINR(c)::QAB(D)
- Tries
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(c);P_SPINB(b)::P=Q
- B(b);P_SPINR(c)::QAB(D)
- Refutation
- B(b);P_SPINR(c)
- Try
- S(C);XR(c)
- Threat
- DUALS(5)
- Vars
- Q(f);XQ(D)::R1(B)
- Refutation
- Q(f);XS(C)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,P_SPINR(c)::QAR(D)
- R(c);P_SPINB(b)::P=Q
- B(b);P_SPINR(c)::QAB(D)
- Refutation
- P(e);XS(C)
- Try
- S(C);
- Threat
- R1(B)
- Vars
- B(b);N_GUARD,P_SPINR(c)::QAR(D)
- R(c);P_SPINB(b)::P=Q
- B(b);N_GUARD,P_PINS(E),P_SPINR(c)::P=Q
- B(b);P_SPINR(c)::QAB(D)
- Refutation
- B(b);P_SPINR(c)
- Try
- S(C);XP(e)
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,P_SPINR(c)::QAR(D)
- Q(f);P_PINS(C)::R1(B)
- R(c);P_SPINB(b)::P=Q
- R(c);P_PINS(C),P_SPINB(b)::R1(B)
- B(b);P_SPINR(c)::QAB(D)
- Refutation
- P(h);XS(C)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD::QAR1(D)
- B(b);::QAB1(D)
- Q(f);::QAB1(D)
- R(c);N_GUARD::QAR1(D),XR(c)
- B(b);N_GUARD::P=Q
- P(a);::QAB1(D)
- Refutation
- Q(f);
- Try
- Actual
- S(C);
- Threat
- R1(B)
- Vars
- P(a);OGATE,XS(C)::P(A)
- B(b);N_GUARD,P_SPINR(c)::QAR(D)
- R(c);P_SPINB(b)::P=Q
- B(b);N_GUARD,P_PINS(E),P_SPINR(c)::P=Q
- B(b);P_SPINR(c)::QAB(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).