MESON Chess Problem Database
Problem Display
PID: 102909 (Q7/2pb1p1P/3r4/5p2/RBBk1P2/NR2p1N1/4Kn2/n7 w - - 0 1)
Seetharaman, Kalyan
Northwest Chess, 1977
#2
10 + 9
| 6490 | yacpdb | 2009 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Qxd5#
- 1...Ra6
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 1...Re6
- 2.Sxf5#
- 2.Qd5#
- 1...Rf6
- 2.Qd5#
- 1...Rg6
- 2.Qd5#
- 1...Rh6
- 2.Qd5#
- 1...Bxa4
- 2.Sxf5#
- 1...Bb5
- 2.Sxf5#
- 1...Bc6
- 2.Qa7#
- 1...Be8
- 2.Sxf5#
- 1...Sd1
- 2.Rd3#
- 1...Sh1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Se4
- 2.Rd3#
- 1...Sg4
- 2.Rd3#
- 1...c5
- 2.Bc3#
- 1...Rd5
- Tries
- 1.Kf3?
- threat
- 2.Se2#
- 1...e2
- 2.Sxe2#
- 1...Bc6+!
- threat
- 1.Bxd6?
- threat
- 2.Bb5#
- 2.Qd5#
- 1...Bxa4
- 2.Sxf5#
- 2.Qd5#
- 1...cxd6
- 2.Qd5#
- 2.Qa7#
- 1...Bb5
- 2.Sxb5#
- 2.Sxf5#
- 2.Bxb5#
- 2.Qd5#
- 1...Bc6
- 2.Qa7#
- 1...Be6
- 2.Sb5#
- 2.Bd5#
- 2.Bxe6#
- 1...Sc2
- 2.Sxc2#
- 2.Qd5#
- 1...Sd3
- 2.Rxd3#
- 2.Qd5#
- 1...c5
- 2.Be5#
- 2.Qd5#
- 1...c6
- 2.Be6#
- 2.Bxf7#
- 1...Sxb3!
- threat
- 1.Ra5?
- threat
- 2.Bc3#
- 2.Bc5#
- 1...Rc6
- 2.Bc3#
- 2.Rd5#
- 1...Rd5
- 2.Bc3#
- 2.Rxd5#
- 2.Qxd5#
- 1...Bb5
- 2.Sxf5#
- 1...Sd1
- 2.Bc5#
- 2.Rd3#
- 1...Sd3
- 2.Bc3#
- 2.Rxd3#
- 1...Se4
- 2.Rd3#
- 1...c5
- 2.Bc3#
- 2.Bxc5#
- 1...Sxb3!
- threat
- 1.Qf3?
- threat
- 2.Qxe3#
- 1...Re6
- 2.Sxf5#
- 2.Qd5#
- 1...Sd1
- 2.Rd3#
- 1...Sg4
- 2.Rd3#
- 1...Sc2!
- threat
- 1.Qe4+?
- 1...Sxe4
- 2.Rd3#
- 1...fxe4!
- 1...Sxe4
- 1.Qa5?
- threat
- 2.Bc3#
- 2.Bc5#
- 2.Qc5#
- 2.Qe5#
- 1...Sxb3
- 2.Bc3#
- 2.Qe5#
- 1...Rc6
- 2.Bc3#
- 2.Qd5#
- 2.Qe5#
- 1...Rd5
- 2.Bc3#
- 2.Qxd5#
- 1...Re6
- 2.Bc3#
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 1...Sd1
- 2.Bc5#
- 2.Rd3#
- 2.Qc5#
- 2.Qe5#
- 1...Sd3
- 2.Bc3#
- 2.Rxd3#
- 1...Se4
- 2.Rd3#
- 2.Qe5#
- 1...Sg4
- 2.Bc3#
- 2.Bc5#
- 2.Rd3#
- 2.Qc5#
- 1...c5
- 2.Bc3#
- 2.Bxc5#
- 2.Qxc5#
- 1...f6
- 2.Bc3#
- 2.Bc5#
- 2.Qc5#
- 1...Bb5!
- threat
- 1.Qa7+?
- 1...c5
- 2.Bc3#
- 2.Bxc5#
- 2.Qxc5#
- 1...Rb6!
- 1...c5
- 1.Qh8+?
- 1...Rf6
- 2.Qxf6#
- 1...f6!
- 1...Rf6
- 1.h8Q+?
- 1...Rf6
- 2.Qd5#
- 2.Qxf6#
- 1...f6!
- 1...Rf6
- 1.h8B+?
- 1...Rf6
- 2.Bxf6#
- 2.Qd5#
- 1...f6!
- 1...Rf6
- 1.Kf3?
- Keys
- 1.Bxf7!
- 1...Bb5+
- 2.Sxb5#
- 1...Bxa4
- 2.Sxf5#
- 1...Sxb3
- 2.Sc2#
- 1...Rc6
- 2.Sb5#
- 1...Rd5
- 2.Qxd5#
- 1...Ra6
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 1...Re6
- 2.Sxf5#
- 1...Rf6
- 2.Qd5#
- 1...Rg6
- 2.Qd5#
- 1...Rh6
- 2.Qd5#
- 1...Bc6
- 2.Qa7#
- 1...Be6
- 2.h8Q#
- 2.h8B#
- 1...Bc8
- 2.Sb5#
- 2.Bxd6#
- 1...Be8
- 2.Sxf5#
- 1...Sc2
- 2.Sxc2#
- 1...Sd1
- 2.Rd3#
- 1...Sh1
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sh3
- 2.Rd3#
- 1...Se4
- 2.Rd3#
- 1...Sg4
- 2.Rd3#
- 1...c5
- 2.Bc3#
- 1...c6
- 2.Bxd6#
- 1...Bb5+
- 1.Bxf7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::QAR1(J),XR(f)
- R(f);N_GUARD::QAR1(J)
- B(h);N_GUARD,XR(E)::S(D),XP(e)
- B(h);N_GUARD,P_PINB(G)::S(D),XP(e)
- B(h);S_CUTP(g),S_CUTR(f)::QAB(J)
- B(h);N_GUARD::S(D),XP(e)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(g);SBLOCK::B(F)
- Tries
- Try
- K(A);S_FLIGHT
- Threat
- S(D)
- Vars
- P(c);::S(D),XP(c)
- Refutation
- B(h);CHECK
- Try
- B(F);XR(f)
- Threat
- DUALS(2)
- Vars
- B(h);S_CUTP(g)::QAB(J)
- Refutation
- S(a);XR(C)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(h);N_GUARD,P_PINB(G)::S(D),XP(e)
- S(b);N_GUARD::R1(C)
- Refutation
- S(a);XR(C)
- Try
- Q(J);
- Threat
- QAB1(J),XP(c)
- Vars
- S(b);N_GUARD::R1(C)
- Refutation
- S(a);
- Try
- Q(J);CHECK
- Vars
- S(b);XQ(J)::R1(C)
- Refutation
- P(e);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(4)
- Refutation
- B(h);P_PINB(G)
- Try
- Q(J);CHECK
- Refutation
- R(f);P_SPINR(f)
- Try
- Q(J);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAB(J),XR(f)
- Refutation
- P(i);P_SPINP(i)
- Try
- P(I);CHECK
- Refutation
- P(i);P_SPINP(i)
- Try
- P(I);CHECK
- Refutation
- P(i);P_SPINP(i)
- Try
- Actual
- B(G);XP(i)
- Vars
- B(h);CHECK,N_GUARD::S(B),XB(h)
- B(h);N_GUARD,XR(E)::S(D),XP(e)
- S(a);N_GUARD,XR(C)::S(B)
- R(f);S_CUTB(h)::S(B)
- R(f);N_GUARD::QAR1(J),XR(f)
- R(f);N_GUARD::QAR1(J)
- R(f);S_CUTB(h)::S(D),XP(e)
- B(h);S_CUTP(g),S_CUTR(f)::QAB(J)
- B(h);S_CUTR(f)::P=Q
- B(h);N_GUARD::S(D),XP(e)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(g);SBLOCK::R(E)+B(F),DCHECK
- P(g);S_CUTB(h)::R(E)+B(F),XR(f)
Developed and maintained by Brian Stephenson.
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