MESON Chess Problem Database
Problem Display
PID: 152312 (n1N1r1b1/4p1K1/5P1n/5k2/1Q1pRPp1/1B1P1rp1/2N5/q7 w - - 0 1)
Rice, John Michael
4th Place, 09. WCCT, 2012-2013
#2
9 + 11
| 56 | The Problemist | 2013 |
| 56 | The Problemist | 2015 |
| 23 | Die Schwalbe | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sxd4#
- 1...Qc1
- 2.Sxd4#
- 1...Qd1
- 2.Sxd4#
- 1...Qe1
- 2.Sxd4#
- 1...Qf1
- 2.Sxd4#
- 1...Qh1
- 2.Sxd4#
- 1...Qa2
- 2.Sxd4#
- 1...Qa3
- 2.Sxd4#
- 1...Qa4
- 2.Sxd4#
- 1...Qa5
- 2.Sxd4#
- 1...Qa6
- 2.Sxd4#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Be6
- 2.Bxe6#
- 1...Bh7
- 2.Be6#
- 1...Sf7
- 2.Be6#
- 1...exf6
- 2.Sd6#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...Qb1
- Tries
- 1.Qd2?
- threat
- 2.Re5#
- 1...Rxf4
- 2.Qxf4#
- 1...exf6
- 2.Sd6#
- 1...Qe1
- 2.Sxd4#
- 1...Qa5
- 2.Sxd4#
- 1...Sf7
- 2.Be6#
- 1...e5
- 2.Sd6#
- 1...Re3!
- threat
- 1.Qa5+?
- 1...Qxa5
- 2.Sxd4#
- 1...e5
- 2.Sd6#
- 1...Bd5!
- 1...Qxa5
- 1.Qc5+?
- 1...e5
- 2.Sd6#
- 1...Bd5!
- 1...e5
- 1.Qd6?
- threat
- 2.Qe5#
- 1...exd6
- 2.Sxd6#
- 1...exf6
- 2.Qxf6#
- 1...Qa5
- 2.Sxd4#
- 1...Sf7
- 2.Be6#
- 2.Qe6#
- 1...e5!
- threat
- 1.Qxd4?
- threat
- 2.Re5#
- 1...Qxd4
- 2.Sxd4#
- 1...exf6
- 2.Sd6#
- 1...Qe1
- 2.Qe5#
- 1...Re3
- 2.Sxe3#
- 1...Sf7
- 2.Be6#
- 1...e5
- 2.Sd6#
- 1...Qa5!
- threat
- 1.Qb5+?
- 1...e5
- 2.Sd6#
- 1...Bd5!
- 1...e5
- 1.Qb8?
- threat
- 2.Qe5#
- 1...exf6
- 2.Sd6#
- 1...Qa5
- 2.Sxd4#
- 1...Sf7
- 2.Be6#
- 1...e5
- 2.Sd6#
- 1...Sc7!
- threat
- 1.Qd2?
- Keys
- 1.Qxe7!
- threat
- 2.Sd6#
- 1...Rxe7+
- 2.Sxe7#
- 1...Rxf4
- 2.Re5#
- 1...Rxc8
- 2.Qe5#
- 1...Qa3
- 2.Sxd4#
- 1...Qa6
- 2.Sxd4#
- 1...Rd8
- 2.Qe5#
- 1...Sf7
- 2.Be6#
- threat
- 1.Qxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD::S(A),XP(d)
- R(j);N_GUARD::S(I),XP(h)
- B(k);N_GUARD::B(B),XB(k)
- B(k);N_GUARD::B(B)
- S(g);S_CUTB(k)::B(B)
- P(h);N_GUARD,XP(G)::S(I)
- P(h);N_GUARD::S(I)
- Tries
- Try
- Q(D);
- Threat
- R1(E)
- Vars
- R(b);OGATE,XP(F)::QAR1(D),XR(b)
- P(h);N_GUARD,XP(G)::S(I)
- Q(a);N_GUARD::S(A),XP(d)
- S(g);S_CUTB(k)::B(B)
- P(h);N_GUARD::S(I)
- Refutation
- R(b);
- Try
- Q(D);CHECK
- Vars
- Q(a);XQ(D)::S(A),XP(d)
- P(h);P_SPINP(h)::S(I)
- Refutation
- B(k);P_SPINB(k)
- Try
- Q(D);CHECK
- Vars
- P(h);P_SPINP(h)::S(I)
- Refutation
- B(k);P_SPINB(k)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- P(h);XQ(D)::S(I),XP(h)
- P(h);OGATE,XP(G)::QAR1(D),XP(h)
- Q(a);N_GUARD::S(A),XP(d)
- Refutation
- P(h);
- Try
- Q(D);XP(d)
- Threat
- R1(E)
- Vars
- Q(a);P_PINP(G),XQ(D)::S(A),XQ(a)
- P(h);N_GUARD,XP(G)::S(I)
- Q(a);N_GUARD::QAR1(D)
- R(b);N_GUARD::S(A),XR(b)
- S(g);S_CUTB(k)::B(B)
- P(h);N_GUARD::S(I)
- Refutation
- Q(a);
- Try
- Q(D);CHECK
- Vars
- P(h);P_SPINP(h)::S(I)
- Refutation
- B(k);P_SPINB(k)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- P(h);N_GUARD,XP(G)::S(I)
- Q(a);N_GUARD::S(A),XP(d)
- S(g);S_CUTB(k)::B(B)
- P(h);N_GUARD::S(I)
- Refutation
- S(i);
- Try
- Actual
- Q(D);XP(h)
- Threat
- S(I)
- Vars
- R(j);CHECK,XQ(D)::S(I),XR(j)
- R(b);SBLOCK,XP(F)::R1(E)
- R(j);N_GUARD,XS(I)::QAR1(D)
- Q(a);N_GUARD::S(A),XP(d)
- R(j);N_GUARD::QAR1(D)
- S(g);S_CUTB(k)::B(B)
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).