MESON Chess Problem Database
Problem Display
PID: 185945 (2BR1bb1/K1Q1p1q1/6nn/1N4p1/4k3/p3NRp1/5pP1/r7 w - - 0 1)
Henry, S
Chess, 1958
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sxc3#
- 1...Qd4+
- 2.Rxd4#
- 1...Qe5
- 2.Qc2#
- 1...Qf7
- 2.Sc3#
- 2.Rd4#
- 1...Qh7
- 2.Sc3#
- 2.Rd4#
- 1...Bh7
- 2.Bb7#
- 1...Se5
- 2.Sc3#
- 2.Rd4#
- 1...Sg4
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 1...Sf7
- 2.Bf5#
- 2.Bb7#
- 1...e5
- 2.Sc3#
- 1...e6
- 2.Bb7#
- 1...Qc3
- Tries
- 1.Sf1?
- threat
- 2.Sd2#
- 2.Sxg3#
- 2.Re3#
- 1...Qd4+
- 2.Rxd4#
- 1...Qb2
- 2.Sxg3#
- 2.Re3#
- 1...Qc3
- 2.Sxg3#
- 2.Sxc3#
- 1...Qe5
- 2.Sd2#
- 2.Qc2#
- 1...Rd1
- 2.Sxg3#
- 2.Re3#
- 1...Re1
- 2.Sd2#
- 2.Sxg3#
- 1...Ra2
- 2.Sxg3#
- 2.Re3#
- 1...Be6
- 2.Sd2#
- 2.Sxg3#
- 1...Se5
- 2.Sd2#
- 2.Sxg3#
- 2.Sc3#
- 2.Rd4#
- 1...Sg4
- 2.Sd2#
- 2.Sxg3#
- 2.Bf5#
- 1...Sf5
- 2.Sd2#
- 2.Bxf5#
- 1...e5
- 2.Sd2#
- 2.Sxg3#
- 2.Sc3#
- 1...e6
- 2.Sd2#
- 2.Sxg3#
- 2.Bb7#
- 1...Rxf1!
- threat
- 1.Sf5?
- threat
- 2.Sxg3#
- 2.Re3#
- 1...Qd4+
- 2.Rxd4#
- 1...Sxf5
- 2.Bxf5#
- 1...Qc3
- 2.Sxc3#
- 2.Sxg3#
- 1...Qe5
- 2.Qc2#
- 1...Re1
- 2.Sxg3#
- 1...Be6
- 2.Sxg3#
- 1...Se5
- 2.Sc3#
- 2.Sxg3#
- 2.Rd4#
- 1...Sg4
- 2.Sxg3#
- 1...e5
- 2.Sc3#
- 2.Sxg3#
- 1...e6
- 2.Sxg3#
- 2.Bb7#
- 1...f1S!
- threat
- 1.Qc4+?
- 1...Ke5
- 2.Qd4#
- 1...Qd4+
- 2.Qxd4#
- 1...Bxc4!
- 1...Ke5
- 1.Qc6+?
- 1...Bd5
- 2.Qxd5#
- 1...Ke5!
- 1...Bd5
- 1.Qb7+?
- 1...Bd5
- 2.Qxd5#
- 1...Ke5!
- 1...Bd5
- 1.Sf1?
- Keys
- 1.Sg4!
- threat
- 2.Re3#
- 2.Qc2#
- 1...Qd4+
- 2.Rxd4#
- 1...Sxg4
- 2.Bf5#
- 1...f1Q
- 2.Re3#
- 1...f1S
- 2.Qc2#
- 1...f1B
- 2.Re3#
- 1...Qb2
- 2.Re3#
- 1...Qc3
- 2.Sxc3#
- 1...Qe5
- 2.Qc2#
- 1...Rc1
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Re1
- 2.Qc2#
- 1...Ra2
- 2.Re3#
- 1...Bb3
- 2.Re3#
- 1...Bc4
- 2.Re3#
- 1...Be6
- 2.Qc2#
- 1...Sf4
- 2.Re3#
- 1...Se5
- 2.Sc3#
- 2.Rd4#
- 1...Sf5
- 2.Bxf5#
- 2.Qc2#
- 1...e5
- 2.Sc3#
- 1...e6
- 2.Bb7#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 2
- Sets
- Q(j);N_GUARD::S(D),XQ(j)
- Q(j);CHECK,N_GUARD::R1(H),XQ(j)
- Q(j);SBLOCK::QAB(F)
- B(l);N_GUARD::B(G)
- S(h);N_GUARD::B(G)
- S(h);N_GUARD::B(G),XS(h)
- P(i);P_PINQ(F),S_CUTQ(j)::S(D)
- P(i);P_PINQ(F),S_CUTB(l)::B(G)
- Tries
- Try
- S(B);
- Threat
- DUALS(3)
- Vars
- Q(j);CHECK,N_GUARD::R1(H),XQ(j)
- Refutation
- R(a);XS(B)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::R1(H),XQ(j)
- S(h);OGATE,XS(B)::B(G),XS(h)
- Q(j);SBLOCK::QAB(F)
- R(a);::S(B),XP(d)
- B(l);::S(B),XP(d)
- S(h);::S(B),XP(d)
- Refutation
- P(b);
- Try
- Q(F);CHECK
- Vars
- K(e);P-FLIGHT::QAB1(F)
- Q(j);CHECK,N_GUARD,P_SPINQ(j)::QAR1(F),XQ(j)
- Refutation
- B(l);XQ(F)
- Try
- Q(F);CHECK
- Vars
- B(l);N_GUARD,P_SPINB(l)::QAB1(F),XB(l)
- Refutation
- K(e);P-FLIGHT
- Try
- Q(F);CHECK
- Vars
- B(l);N_GUARD,P_SPINB(l)::QAB1(F),XB(l)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::R1(H),XQ(j)
- S(h);N_GUARD,XS(B)::B(G)
- P(b);::R1(C)
- P(b);::QAB(F)
- Q(j);::R1(C)
- Q(j);N_GUARD::S(D),XQ(j)
- Q(j);::QAB(F)
- R(a);::R1(C)
- R(a);::QAB(F)
- B(l);::R1(C)
- B(l);::QAB(F)
- S(g);::R1(C)
- P(i);P_PINQ(F),S_CUTQ(j)::S(D)
- P(i);P_PINQ(F),S_CUTB(l)::B(G)
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).