MESON Chess Problem Database
Problem Display
PID: 163947 (2b1N1B1/8/r4pN1/8/3Pk1P1/nRR3r1/6Pn/2b2QBK w - - 0 1)
Rotenberg, Jacques
StrateGems, 2014
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Re3
- 2.Qf4#
- 1...Rxg4
- 2.Qd3#
- 1...Ra4
- 2.Sd6#
- 2.Sxf6#
- 1...Ra5
- 2.Sd6#
- 2.Sxf6#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qf5#
- 1...Ra7
- 2.Sd6#
- 2.Sxf6#
- 1...Ra8
- 2.Sd6#
- 2.Sxf6#
- 1...Bb2
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Bf4
- 2.Qxf4#
- 1...Bf5
- 2.Qxf5#
- 1...Be6
- 2.Sxf6#
- 1...Bb7
- 2.Qf5#
- 1...Sf3
- 2.Qd3#
- 1...Rxg2
- Tries
- 1.Be3?
- threat
- 2.Qd3#
- 2.Qf4#
- 1...Rxg2
- 2.Qf4#
- 1...Rxe3
- 2.Qf4#
- 1...Rxg4
- 2.Qd3#
- 1...Bxe3
- 2.Qd3#
- 1...Re6
- 2.Qf5#
- 1...Be6
- 2.Sxf6#
- 1...Rf3
- 2.Qd3#
- 1...Sf3
- 2.Qd3#
- 1...Sxf1!
- threat
- 1.Be6?
- threat
- 2.Sxf6#
- 2.Qf5#
- 1...Rxe6
- 2.Qf5#
- 1...Bxe6
- 2.Sxf6#
- 1...Sxf1
- 2.Sxf6#
- 1...Sxg4
- 2.Qf5#
- 1...Re3
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Ra5
- 2.Sd6#
- 2.Sxf6#
- 1...Bf4
- 2.Sxf6#
- 2.Qxf4#
- 1...Bg5
- 2.Qf5#
- 1...Sf3
- 2.Sxf6#
- 2.Qd3#
- 1...f5
- 2.Sf6#
- 2.Qxf5#
- 1...Rf3!
- threat
- 1.Rb5?
- threat
- 2.Bd5#
- 1...Re3
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qf5#
- 1...Be6
- 2.Sxf6#
- 1...Bb7
- 2.Qf5#
- 1...Sxb5!
- threat
- 1.Rb6?
- threat
- 2.Sd6#
- 2.Sxf6#
- 1...Sxg4
- 2.Sd6#
- 1...Re3
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Be6
- 2.Sxf6#
- 1...Rf3
- 2.Sd6#
- 1...Bf4
- 2.Sxf6#
- 2.Qxf4#
- 1...Bg5
- 2.Sd6#
- 1...Sc4
- 2.Sxf6#
- 1...Sb5
- 2.Sxf6#
- 1...f5
- 2.Sd6#
- 2.Sf6#
- 1...Rxb6!
- threat
- 1.Re3+?
- 1...Rxe3
- 2.Qf4#
- 1...Bxe3
- 2.Qd3#
- 1...Kxd4!
- 1...Rxe3
- 1.Rxg3?
- threat
- 2.Qd3#
- 1...Re6
- 2.Qf5#
- 1...Be6
- 2.Sxf6#
- 1...Sxf1!
- threat
- 1.Rc6?
- threat
- 2.Sd6#
- 2.Sxf6#
- 1...Sxg4
- 2.Sd6#
- 1...Re3
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Be6
- 2.Sxf6#
- 1...Rf3
- 2.Sd6#
- 1...Bf4
- 2.Sxf6#
- 2.Qxf4#
- 1...Bg5
- 2.Sd6#
- 1...Sc4
- 2.Sxf6#
- 1...Sb5
- 2.Sxf6#
- 1...f5
- 2.Sd6#
- 2.Sf6#
- 1...Rxc6!
- threat
- 1.Qe2+?
- 1...Be3
- 2.Qd3#
- 1...Re3!
- 1...Be3
- 1.Qb5?
- threat
- 2.Bd5#
- 2.Qd5#
- 1...Rxc3
- 2.Bd5#
- 1...Rxg4
- 2.Qd3#
- 2.Qd5#
- 1...Bxg4
- 2.Qd5#
- 1...Sxg4
- 2.Qd5#
- 1...Re3
- 2.Qd5#
- 1...Be3
- 2.Qd3#
- 2.Qd5#
- 1...Ra5
- 2.Sd6#
- 2.Sxf6#
- 2.Bd5#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qf5#
- 1...Be6
- 2.Sxf6#
- 1...Bb7
- 2.Qf5#
- 1...Sxb5!
- threat
- 1.Qxa6?
- threat
- 2.Sd6#
- 2.Sxf6#
- 2.Qc6#
- 1...Rxc3
- 2.Sd6#
- 2.Sxf6#
- 1...Rxg4
- 2.Sd6#
- 2.Qd3#
- 1...Bxg4
- 2.Sd6#
- 1...Bxa6
- 2.Sd6#
- 2.Sxf6#
- 1...Sxg4
- 2.Sd6#
- 1...Be3
- 2.Qd3#
- 1...Be6
- 2.Sxf6#
- 2.Qxe6#
- 1...Rf3
- 2.Sd6#
- 2.Qc6#
- 1...Bf4
- 2.Sxf6#
- 2.Qc6#
- 1...Bg5
- 2.Sd6#
- 2.Qc6#
- 1...Bb7
- 2.Sd6#
- 2.Sxf6#
- 2.Qxb7#
- 2.Qe6#
- 1...Bd7
- 2.Sd6#
- 2.Sxf6#
- 1...Sc4
- 2.Sxf6#
- 2.Qc6#
- 1...Sb5
- 2.Sxf6#
- 2.Qc6#
- 1...f5
- 2.Sd6#
- 2.Sf6#
- 2.Qc6#
- 1...Re3!
- threat
- 1.Be3?
- Keys
- 1.Rc5!
- threat
- 2.Bd5#
- 1...Re3
- 2.Qf4#
- 1...Be3
- 2.Qd3#
- 1...Rd6
- 2.Sxd6#
- 1...Re6
- 2.Qf5#
- 1...Be6
- 2.Sxf6#
- 1...Bb7
- 2.Qf5#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- R(d);N_GUARD,XP(D)::QAB1(A)
- R(d);N_GUARD::QAB1(A),XR(d)
- R(d);S_CUTB(a)::QAR1(A)
- R(d);N_GUARD,XP(H)::QAB1(A)
- R(f);N_GUARD::S(J),XR(f)
- R(f);S_CUTB(h)::QAB1(A)
- B(a);N_GUARD::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- B(a);N_GUARD::QAR1(A),XB(a)
- B(h);N_GUARD::QAB1(A),XB(h)
- B(h);S_CUTR(f)::S(J),XP(g)
- B(h);N_GUARD::QAB1(A)
- S(b);S_CUTR(d)::QAB1(A)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- R(d);XP(D)::QAR1(A)
- R(d);XB(B)::QAR1(A)
- R(d);XP(H)::QAB1(A)
- B(a);XB(B)::QAB1(A)
- R(f);S_CUTB(h)::QAB1(A)
- B(h);S_CUTR(f)::S(J),XP(g)
- R(d);::QAB1(A)
- S(b);::QAB1(A)
- Refutation
- S(b);XQ(A)
- Try
- B(K);
- Threat
- DUALS(2)
- Vars
- R(f);XB(K)::QAB1(A)
- B(h);XB(K)::S(J),XP(g)
- S(b);XQ(A)::S(J),XP(g)
- S(b);XP(H)::QAB1(A)
- R(d);S_CUTB(a)::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- B(a);::QAB1(A)
- Refutation
- R(d);
- Try
- R(E);
- Threat
- B(K)
- Vars
- R(d);S_CUTB(a)::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- R(f);N_GUARD::S(J),XR(f)
- R(f);S_CUTB(h)::QAB1(A)
- B(h);S_CUTR(f)::S(J),XP(g)
- B(h);N_GUARD::QAB1(A)
- Refutation
- S(c);XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(b);XP(H)::S(J)
- R(d);S_CUTB(a)::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- B(h);::S(J),XP(g)
- R(d);::S(J)
- B(a);::S(J)
- S(c);::S(J),XP(g)
- Refutation
- R(f);XR(E)
- Try
- R(F);CHECK
- Vars
- R(d);XR(F)::QAR1(A)
- B(a);XR(F)::QAB1(A)
- Refutation
- K(e);P-FLIGHT,XP(G)
- Try
- R(F);XR(d)
- Threat
- QAB1(A)
- Vars
- R(f);S_CUTB(h)::QAB1(A)
- B(h);S_CUTR(f)::S(J),XP(g)
- Refutation
- S(b);XQ(A)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- S(b);XP(H)::S(J)
- R(d);S_CUTB(a)::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- B(h);::S(J),XP(g)
- R(d);::S(J)
- B(a);::S(J)
- S(c);::S(J),XP(g)
- Refutation
- R(f);XR(F)
- Try
- Q(A);CHECK
- Vars
- B(a);P_SPINB(a),S_CUTR(d)::QAB1(A)
- Refutation
- R(d);P_SPINR(d)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);XR(F)::B(K)
- B(h);XP(H)::QAB1(A)
- S(b);XP(H)::QAB1(A)
- R(d);::QAB1(A)
- R(f);N_GUARD::S(J),XR(f)
- R(f);S_CUTB(h)::QAB1(A)
- B(h);S_CUTR(f)::S(J),XP(g)
- B(h);N_GUARD::QAB1(A)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);XR(f)
- Threat
- DUALS(3)
- Vars
- B(h);XP(H)::S(J)
- S(b);XP(H)::S(J)
- B(a);S_CUTR(d)::QAB1(A)
- Refutation
- R(d);
- Try
- Actual
- R(F);
- Threat
- B(K)
- Vars
- R(d);S_CUTB(a)::QAR1(A)
- B(a);S_CUTR(d)::QAB1(A)
- R(f);N_GUARD::S(J),XR(f)
- R(f);S_CUTB(h)::QAB1(A)
- B(h);S_CUTR(f)::S(J),XP(g)
- B(h);N_GUARD::QAB1(A)
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).