MESON Chess Problem Database
Problem Display
PID: 60012 (4K3/2R1p3/p1Q5/1p4B1/3k2r1/2pn2b1/2b1RN2/2N1r2n w - - 0 1)
Krishnamurthy, Thiruvannam S
Narayanan, Chithathuz Gopatan Sathya
2nd Prize, British Chess Magazine, 1970
#2
7 + 11
| 3751 | FIDE Album (1968-1970) | 1977 |
| 133 | The Problemist Supplement | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Rd7#
- 2.Qd7#
- 1...Rxg5
- 2.Qe4#
- 1...Bb1
- 2.Sb3#
- 1...Bb3
- 2.Sxb3#
- 1...Bxf2
- 2.Rd7#
- 2.Qd7#
- 1...Bf4
- 2.Qe4#
- 1...Bh4
- 2.Rd7#
- 2.Qd7#
- 1...Be5
- 2.Be3#
- 1...Sxc1
- 2.Qc5#
- 1...Sb2
- 2.Qc5#
- 1...Sxf2
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Be3#
- 2.Qc5#
- 1...b4
- 2.Qc4#
- 1...e5
- 2.Be3#
- 2.Rd7#
- 2.Qd7#
- 2.Qd6#
- 1...Re4
- Tries
- 1.Scxd3?
- threat
- 2.Be3#
- 2.Qc5#
- 1...Rxe2
- 2.Qc5#
- 1...Rxg5
- 2.Qe4#
- 1...Bxd3
- 2.Qc5#
- 1...Bxf2
- 2.Rd7#
- 2.Qd7#
- 1...Re4
- 2.Qxe4#
- 2.Qc5#
- 1...Rf4
- 2.Rd7#
- 2.Qd7#
- 2.Qc5#
- 1...Bf4
- 2.Qe4#
- 2.Qc5#
- 1...Bd6
- 2.Be3#
- 1...Sxf2!
- threat
- 1.Sxg4?
- threat
- 2.Be3#
- 2.Qe4#
- 1...Rxe2
- 2.Sxe2#
- 1...Bxc7
- 2.Be3#
- 1...Sc5
- 2.Qxc5#
- 1...Bf2
- 2.Rd7#
- 2.Qe4#
- 2.Qd7#
- 1...Bf4
- 2.Qe4#
- 1...Shf2
- 2.Be3#
- 1...Sb2
- 2.Be3#
- 2.Qc5#
- 1...Sdf2
- 2.Be3#
- 2.Qc5#
- 1...Sb4
- 2.Be3#
- 2.Qc5#
- 1...Sf4
- 2.Qc5#
- 1...Se5
- 2.Be3#
- 2.Qc5#
- 1...Sxc1!
- threat
- 1.Bf4?
- threat
- 2.Rd7#
- 2.Qe4#
- 2.Qd7#
- 1...Rxe2
- 2.Sxe2#
- 2.Rd7#
- 2.Qd7#
- 1...Rxf4
- 2.Rd7#
- 2.Qd7#
- 1...Bxf4
- 2.Qe4#
- 1...Shxf2
- 2.Rd7#
- 2.Qd7#
- 1...Sxc1
- 2.Rd7#
- 2.Qd7#
- 2.Qc5#
- 1...Sdxf2
- 2.Rd7#
- 2.Qd7#
- 2.Qc5#
- 1...Sxf4
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Rg5
- 2.Qe4#
- 1...Rg6
- 2.Qe4#
- 1...Bb3
- 2.Sxb3#
- 2.Qe4#
- 1...Sb2
- 2.Rd7#
- 2.Qd7#
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Se5
- 2.Be3#
- 2.Qc5#
- 1...Rg8+!
- threat
- 1.Bf6+?
- 1...Be5
- 2.Rd7#
- 2.Qd7#
- 1...Se5
- 2.Rd7#
- 2.Qd7#
- 2.Qc5#
- 1...e5
- 2.Rd7#
- 2.Qd7#
- 2.Qd6#
- 1...exf6!
- 1...Be5
- 1.Rcxe7?
- threat
- 2.Be3#
- 1...Rxe2
- 2.Sxe2#
- 1...Rxg5
- 2.R7e4#
- 1...Bxf2
- 2.Rd7#
- 1...Re4
- 2.R7xe4#
- 1...Rf4
- 2.Rd7#
- 1...Bf4
- 2.R7e4#
- 1...Sf4
- 2.Bf6#
- 1...Sc5!
- threat
- 1.Qxb5?
- threat
- 2.Be3#
- 2.Rc4#
- 2.Qc4#
- 1...Rxe2
- 2.Sxe2#
- 2.Rc4#
- 1...Rxg5
- 2.Rc4#
- 2.Qc4#
- 1...Bxf2
- 2.Rc4#
- 2.Rd7#
- 2.Qc4#
- 2.Qd7#
- 1...Bxc7
- 2.Be3#
- 1...Shxf2
- 2.Rc4#
- 2.Qc4#
- 1...Sdxf2
- 2.Rc4#
- 2.Qc4#
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Re4
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 2.Rd7#
- 2.Qc4#
- 2.Qd7#
- 1...Bb3
- 2.Sxb3#
- 2.Be3#
- 2.Qxd3#
- 1...Ba4
- 2.Be3#
- 2.Rc4#
- 1...Bf4
- 2.Rc4#
- 2.Qc4#
- 1...Sb2
- 2.Be3#
- 2.Qc5#
- 1...Sf4
- 2.Rc4#
- 2.Qc4#
- 2.Qc5#
- 2.Qe5#
- 1...Se5
- 2.Be3#
- 2.Qc5#
- 1...axb5!
- threat
- 1.Qb6+?
- 1...Sc5
- 2.Qxc5#
- 1...Kd5!
- 1...Sc5
- 1.Scxd3?
- Keys
- 1.Qe6!
- threat
- 2.Be3#
- 1...Rxe2
- 2.Sxe2#
- 1...Rxg5
- 2.Qe4#
- 1...Bxf2
- 2.Qd7#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Qd7#
- 1...Bf4
- 2.Qe4#
- 1...Sf4
- 2.Qe5#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(h);N_GUARD::QAR1(E),XR(h)
- R(h);N_GUARD,XB(D)::QAR1(E)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(f);S_CUTR(h)::QAR1(E)
- B(f);SBLOCK::B(D)
- S(e);N_GUARD,XS(A)::QAB1(E)
- S(e);N_GUARD::QAB1(E)
- S(e);N_GUARD,XS(C)::QAB1(E)
- S(e);N_GUARD::QAB1(E),XS(e)
- P(i);N_GUARD::QAR1(E)
- Tries
- Try
- S(A);XS(e)
- Threat
- DUALS(2)
- Vars
- R(a);XR(B)::QAB1(E)
- R(h);N_GUARD,XB(D)::QAR1(E)
- B(c);XS(A)::QAB1(E)
- B(f);::B(D)
- Refutation
- S(b);XS(C)
- Try
- S(C);XR(h)
- Threat
- DUALS(2)
- Vars
- R(a);XR(B)::S(A),XR(a)
- B(f);XR(F)::B(D)
- S(e);N_GUARD::QAB1(E),XS(e)
- B(f);::QAR1(E)
- S(b);::B(D)
- S(e);N_GUARD::QAB1(E)
- Refutation
- S(e);XS(A)
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- B(f);XB(D)::QAR1(E)
- S(e);N_GUARD,XB(D)::QAB1(E)
- S(e);N_GUARD::QAB1(E),XS(e)
- R(h);::QAR1(E)
- S(e);N_GUARD::QAB1(E)
- Refutation
- R(h);CHECK
- Try
- B(D);CHECK
- Refutation
- P(k);P_PINR(B),XB(D)
- Try
- R(F);XP(k)
- Threat
- B(D)
- Vars
- R(a);P_PINR(F),XR(B)::S(A),XR(a)
- R(h);N_GUARD,XB(D)::R1(F)
- B(f);N_GUARD,XS(C)::R(F)
- R(h);N_GUARD,P_PINR(F)::R1(F),XR(h)
- R(h);S_CUTB(f)::R(F)
- B(f);S_CUTR(h)::R1(F)
- S(e);N_GUARD,S_CUTB(f)::B(D)
- Refutation
- S(e);
- Try
- Q(E);XP(i)
- Threat
- DUALS(3)
- Vars
- B(f);XR(F)::B(D)
- S(e);N_GUARD::QAB1(E),XS(e)
- R(h);::R1(F)
- Refutation
- P(j);XQ(E)
- Try
- Q(E);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(E),XS(e)
- Refutation
- K(g);P-FLIGHT
- Try
- Actual
- Q(E);
- Threat
- B(D)
- Vars
- R(a);XR(B)::S(A),XR(a)
- R(h);N_GUARD,XB(D)::QAR1(E)
- B(f);N_GUARD,XS(C)::QAR(E)
- R(h);N_GUARD::QAR1(E),XR(h)
- R(h);S_CUTB(f)::QAR(E)
- B(f);S_CUTR(h)::QAR1(E)
- S(e);N_GUARD,S_CUTB(f)::QAB1(E)
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