MESON Chess Problem Database
Problem Display
PID: 258302 (2r3b1/3R4/q2B1p2/5Q2/2kP1b1r/p6p/nRN1P3/1N3K2 w - - 0 1)
Maleika, Gerhard
StrateGems, 2022
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qb5
- 2.Qxb5#
- 1...Qxd6
- 2.Qb5#
- 1...Qa7
- 2.Qb5#
- 1...Qa8
- 2.Qb5#
- 1...Rc5
- 2.Qxc5#
- 1...Ra8
- 2.Qc5#
- 1...Rb8
- 2.Qc5#
- 1...Rd8
- 2.Qc5#
- 1...Re8
- 2.Qc5#
- 1...Rf8
- 2.Qc5#
- 1...Bd5
- 2.Qd3#
- 1...Be6
- 2.Qxe6#
- 1...Bh7
- 2.Qe6#
- 1...Sc1
- 2.Rb4#
- 1...Sc3
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 1...Qb5
- Tries
- 1.Scxa3+?
- 1...Kxd4
- 2.Bc5#
- 1...Qxa3!
- 1...Kxd4
- 1.Se3+?
- 1...Kxd4
- 2.Bc5#
- 1...Bxe3!
- 1...Kxd4
- 1.Bxa3?
- threat
- 2.Qd3#
- 1...Qxa3
- 2.Scxa3#
- 2.Qb5#
- 1...Qd6
- 2.Qb5#
- 1...Bh7
- 2.Qd5#
- 1...Sc1
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 1...Bd6!
- threat
- 1.Bb4?
- threat
- 2.Qd3#
- 1...Sxb4
- 2.Rxb4#
- 1...Qd6
- 2.Sbxa3#
- 1...Bd6
- 2.Sd2#
- 1...Bh7
- 2.Qd5#
- 1...Sc1!
- threat
- 1.Bxf4?
- threat
- 2.Se3#
- 2.Qd3#
- 1...axb2
- 2.Qd3#
- 1...Sc1
- 2.Se3#
- 2.Rb4#
- 1...Qd6
- 2.Qb5#
- 1...Qe6
- 2.Scxa3#
- 2.Qd3#
- 2.Qb5#
- 1...Re8
- 2.Qd3#
- 2.Qc5#
- 1...Bd5
- 2.Qd3#
- 2.Qxd5#
- 1...Bh7
- 2.Se3#
- 2.Qd5#
- 1...Sb4
- 2.Se3#
- 2.Rxb4#
- 1...Rxf4+!
- threat
- 1.Bc7?
- threat
- 2.Qd3#
- 2.Qc5#
- 1...Rxc7
- 2.Qd3#
- 1...axb2
- 2.Qd3#
- 1...Sc1
- 2.Rb4#
- 2.Qc5#
- 1...Qb5
- 2.Scxa3#
- 2.Qd3#
- 2.Qxb5#
- 1...Qa5
- 2.Qd3#
- 1...Qb6
- 2.Scxa3#
- 2.Qd3#
- 1...Qc6
- 2.Scxa3#
- 2.Qd3#
- 1...Qd6
- 2.Qb5#
- 1...Qa7
- 2.Qd3#
- 2.Qb5#
- 1...Rh5
- 2.Qd3#
- 1...Be5
- 2.Se3#
- 2.Qd3#
- 1...Bd5
- 2.Qd3#
- 2.Qxd5#
- 1...Bh7
- 2.Qc5#
- 2.Qd5#
- 1...Sb4
- 2.Rxb4#
- 2.Qc5#
- 1...Bd6!
- threat
- 1.Be7?
- threat
- 2.Qd3#
- 1...Sc1
- 2.Rb4#
- 1...Qd6
- 2.Qb5#
- 1...Bh7
- 2.Qd5#
- 1...Sb4
- 2.Rxb4#
- 1...Bd6!
- threat
- 1.Bb8?
- threat
- 2.Qd3#
- 1...Qd6
- 2.Qb5#
- 1...Bh7
- 2.Qd5#
- 1...Sc1
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 1...Bd6!
- threat
- 1.Bf8?
- threat
- 2.Qd3#
- 1...Qd6
- 2.Qb5#
- 1...Bh7
- 2.Qd5#
- 1...Sc1
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 1...Bd6!
- threat
- 1.Rb5?
- threat
- 2.Qd3#
- 1...Rc5
- 2.Qxc5#
- 1...Sb4
- 2.Rxb4#
- 1...Bh7
- 2.Qd5#
- 1...Sc1
- 2.Rb4#
- 1...Qxb5!
- threat
- 1.Rc7+?
- 1...Qc6
- 2.Qb5#
- 1...Rxc7!
- 1...Qc6
- 1.Scxa3+?
- Keys
- 1.Bc5!
- threat
- 2.Qd3#
- 1...Sb4
- 2.Rxb4#
- 1...Sc1
- 2.Rb4#
- 1...Qd6
- 2.Scxa3#
- 1...Bd6
- 2.Se3#
- 1...Bh7
- 2.Qd5#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(g);N_GUARD::QAB1(G),XQ(g)
- Q(g);N_GUARD,XB(H)::QAB1(G)
- Q(g);N_GUARD::QAB1(G)
- R(i);N_GUARD::QAR1(G),XR(i)
- R(i);N_GUARD::QAR1(G)
- B(j);SBLOCK::QAB1(G)
- B(j);N_GUARD::QAB(G),XB(j)
- B(j);N_GUARD::QAB(G)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Tries
- Try
- S(D);CHECK,XP(b)
- Vars
- K(d);P-FLIGHT,P_PINP(E),XP(F)::R(I)+B(H),DCHECK
- Refutation
- Q(g);XS(D)
- Try
- S(D);CHECK
- Vars
- K(d);P-FLIGHT,P_PINP(E),XP(F)::R(I)+B(H),DCHECK
- Refutation
- B(e);XS(D)
- Try
- B(H);XP(b)
- Threat
- QAB1(G)
- Vars
- Q(g);N_GUARD::QAB1(G)
- B(j);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- B(e);
- Try
- B(H);
- Threat
- QAB1(G)
- Vars
- S(a);OGATE,XB(H)::R1(C),XS(a)
- Q(g);N_GUARD::S(A),XP(b)
- B(e);N_GUARD::S(A)
- B(j);N_GUARD::QAB1(G)
- Refutation
- S(a);
- Try
- B(H);XB(e)
- Threat
- DUALS(2)
- Vars
- P(b);XR(C)::QAB1(G)
- Q(g);N_GUARD::QAB1(G)
- Refutation
- R(f);CHECK,XB(H)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(i);XB(H)::QAB1(G)
- P(b);XR(C)::QAB1(G)
- Q(g);::QAB1(G)
- Q(g);N_GUARD::QAB1(G)
- R(f);::QAB1(G)
- Refutation
- B(e);
- Try
- B(H);
- Threat
- QAB1(G)
- Vars
- S(a);N_GUARD::R1(C)
- Q(g);N_GUARD::QAB1(G)
- B(j);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- B(e);
- Try
- B(H);
- Threat
- QAB1(G)
- Vars
- Q(g);N_GUARD::QAB1(G)
- B(j);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- B(e);
- Try
- B(H);
- Threat
- QAB1(G)
- Vars
- Q(g);N_GUARD::QAB1(G)
- B(j);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- B(e);
- Try
- R(C);
- Threat
- QAB1(G)
- Vars
- R(i);N_GUARD::QAR1(G),XR(i)
- S(a);N_GUARD::R1(C),XS(a)
- B(j);N_GUARD::QAB1(G)
- S(a);N_GUARD::R1(C)
- Refutation
- Q(g);XR(C)
- Try
- R(I);CHECK
- Vars
- Q(g);P_SPINQ(g)::QAB1(G)
- Refutation
- R(i);XR(I)
- Try
- Actual
- B(H);
- Threat
- QAB1(G)
- Vars
- S(a);N_GUARD::R1(C),XS(a)
- S(a);N_GUARD::R1(C)
- Q(g);N_GUARD::S(D),XP(b)
- B(e);N_GUARD::S(D)
- B(j);N_GUARD::QAB1(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).