MESON Chess Problem Database
Problem Display
PID: 267215 (K7/pQ1N2p1/8/8/1Bkqn2R/1pb1P3/1P6/2NR3b w - - 0 1)
Driver, John Edward
The Problemist, 1955
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Rxd4#
- 1...Bxb4
- 2.Rxd4#
- 1...Sd2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sg3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Be1
- Tries
- 1.Bxc3?
- threat
- 2.Rxd4#
- 2.Qxb3#
- 1...Qxe3
- 2.Qd5#
- 2.Qa6#
- 2.Qxb3#
- 2.Qb4#
- 1...Qxd1
- 2.Qc6#
- 1...Qxd7
- 2.Qb4#
- 1...Sxc3
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Qb6
- 2.Qd5#
- 1...Qc5
- 2.Qxb3#
- 1...Qe5
- 2.Qxb3#
- 2.Qb4#
- 1...Qf6
- 2.Qd5#
- 2.Qxb3#
- 2.Qb4#
- 1...Qd2
- 2.Qc6#
- 2.Qxb3#
- 1...Qd3
- 2.Qc6#
- 2.Qxb3#
- 1...Qd5
- 2.Qxd5#
- 1...Qd6
- 2.Qxb3#
- 1...Sd2
- 2.Rxd4#
- 1...Sf2
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Sg3
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Sc5
- 2.Se5#
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Sg5
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Sd6
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Sf6
- 2.Rdxd4#
- 2.Rhxd4#
- 1...Qxc3!
- threat
- 1.Bd6?
- threat
- 2.Qxb3#
- 1...Qxd1
- 2.Qc6#
- 1...Qb6
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Bb4
- 2.Rxd4#
- 1...Sd2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sg3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Sg5
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sxd6!
- threat
- 1.Be7?
- threat
- 2.Qxb3#
- 1...Qxd1
- 2.Qc6#
- 1...Qb6
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Bb4
- 2.Rxd4#
- 1...Sd2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sg3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Sg5
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sd6!
- threat
- 1.Bf8?
- threat
- 2.Qxb3#
- 1...Qxd1
- 2.Qc6#
- 1...Qb6
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Bb4
- 2.Rxd4#
- 1...Sd2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sg3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Sg5
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sd6!
- threat
- 1.Bxc3?
- Keys
- 1.Ba3!
- threat
- 2.Qxb3#
- 1...Qxd1
- 2.Qc6#
- 1...Qb6
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Bb4
- 2.Rxd4#
- 1...Sd2
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sg3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- 1...Sf6
- 2.Se5#
- threat
- 1.Ba3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(c);N_GUARD::R1(B),XQ(e)
- B(c);N_GUARD,XB(E)::R1(B),XQ(e)
- S(f);P_PINQ(G),P_SPINQ(e)::S(H)
- Tries
- Try
- B(E);XB(c)
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,P_SPINS(f),XR(B)::QAR2(G)
- Q(e);P_SPINS(f),XS(H)::QAR1(G)
- Q(e);N_GUARD,P_SPINS(f)::QAB1(G)
- Q(e);P_SPINS(f)::QAB1(G),XP(b)
- Q(e);N_GUARD,P_PINQ(G),P_SPINS(f)::QAB1(G),XQ(e)
- S(f);OGATE,P_PINQ(G),P_SPINQ(e)::R1(F),XQ(e)
- Refutation
- Q(e);P_SPINS(f),XB(E)
- Try
- B(E);
- Threat
- QAB1(G),XP(b)
- Vars
- Q(e);N_GUARD,P_SPINS(f),XR(B)::QAR2(G)
- Q(e);N_GUARD,P_SPINS(f)::QAB1(G)
- Q(e);N_GUARD,P_PINQ(G),P_SPINS(f)::QAB1(G),XQ(e)
- B(c);N_GUARD::R1(B),XQ(e)
- S(f);P_PINQ(G),P_SPINQ(e)::S(H)
- Refutation
- S(f);P_PINQ(G),P_SPINQ(e),XB(E)
- Try
- B(E);
- Threat
- QAB1(G),XP(b)
- Vars
- Q(e);N_GUARD,P_SPINS(f),XR(B)::QAR2(G)
- Q(e);N_GUARD,P_SPINS(f)::QAB1(G)
- Q(e);N_GUARD,P_PINQ(G),P_SPINS(f)::QAB1(G),XQ(e)
- B(c);N_GUARD::R1(B),XQ(e)
- S(f);P_PINQ(G),P_SPINQ(e)::S(H)
- Refutation
- S(f);P_PINQ(G),P_SPINQ(e)
- Try
- B(E);
- Threat
- QAB1(G),XP(b)
- Vars
- Q(e);N_GUARD,P_SPINS(f),XR(B)::QAR2(G)
- Q(e);N_GUARD,P_SPINS(f)::QAB1(G)
- Q(e);N_GUARD,P_PINQ(G),P_SPINS(f)::QAB1(G),XQ(e)
- B(c);N_GUARD::R1(B),XQ(e)
- S(f);P_PINQ(G),P_SPINQ(e)::S(H)
- Refutation
- S(f);P_PINQ(G),P_SPINQ(e)
- Try
- Actual
- B(E);
- Threat
- QAB1(G),XP(b)
- Vars
- Q(e);N_GUARD,P_SPINS(f),XR(B)::QAR2(G)
- Q(e);N_GUARD,P_SPINS(f)::QAB1(G)
- Q(e);N_GUARD,P_PINQ(G),P_SPINS(f)::QAB1(G),XQ(e)
- B(c);N_GUARD::R1(B),XQ(e)
- S(f);P_PINQ(G),P_SPINQ(e)::S(H)
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).