MESON Chess Problem Database
Problem Display
PID: 178621 (R1n1B3/1Nk1nQp1/P4pRb/1p4p1/1K4P1/5p2/5B2/8 w - - 0 1)
Krishnamurthy, Thiruvannam S
Narayanan, Chithathuz Gopatan Sathya
Busmen's Chess Review, 1968
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...Sb6
- Tries
- 1.Ka3?
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...b4+!
- 1...Sb6
- 1.Kb3?
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...b4!
- 1...Sb6
- 1.Kc3?
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...b4+!
- 1...Sb6
- 1.Ka5?
- 1...Sb6
- 2.Bg3#
- 2.Bxb6#
- 1...Sd6
- 2.Bb6#
- 2.Qxe7#
- 1...Sa7
- 2.Bg3#
- 2.Bb6#
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...b4!
- 1...Sb6
- 1.Kc5?
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Bg3#
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...b4!
- 1...Sb6
- 1.Sa5?
- 1...Kd6
- 2.Bg3#
- 1...Kd8
- 2.Bb6#
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5!
- 1...Kd6
- 1.Sd8?
- 1...Kd6
- 2.Bg3#
- 1...Kxd8
- 2.Bb6#
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Se6#
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5!
- 1...Kd6
- 1.Bg1?
- 1...Sb6
- 2.Bh2#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...f2!
- 1...Sb6
- 1.Bc5?
- 1...Sb6
- 2.Bd6#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rc6#
- 1...f2!
- 1...Sb6
- 1.Bxb5?
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...f5!
- 1...Sb6
- 1.Rxf6?
- threat
- 2.Rc6#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Bg3#
- 2.Bb6#
- 2.Qxe7#
- 1...gxf6!
- threat
- 1.Qc4+?
- 1...Sc6+
- 2.Qxc6#
- 1...bxc4!
- 1...Sc6+
- 1.Qd5?
- threat
- 2.Qd7#
- 2.Qd8#
- 1...Sc6+
- 2.Qxc6#
- 1...Sb6
- 2.Bg3#
- 2.Qd6#
- 2.Qd8#
- 1...Sd6
- 2.Qxd6#
- 1...Sxd5+!
- threat
- 1.Qe6?
- threat
- 2.Qd7#
- 1...Sc6+
- 2.Qxc6#
- 1...Sb6
- 2.Bg3#
- 2.Bxb6#
- 2.Qxb6#
- 2.Qd6#
- 1...Sd5+!
- threat
- 1.Qxg7?
- 1...f5
- 2.Rc6#
- 1...Sb6
- 2.Bg3#
- 1...Sd6
- 2.Qxe7#
- 1...Sa7
- 2.Qxe7#
- 1...Bxg7!
- 1...f5
- 1.Ka3?
- Keys
- 1.Sd6!
- 1...Kxd6
- 2.Bg3#
- 1...Kd8
- 2.Bb6#
- 1...Sxd6
- 2.Qxe7#
- 1...Sb6
- 2.Sxb5#
- 1...Sa7
- 2.Qxe7#
- 1...f5
- 2.Rxc8#
- 1...Kxd6
- 1.Sd6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(b);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(b);
- Try
- K(B);S_FLIGHT
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(b);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- P(d);OGATE::R1(E)
- Refutation
- P(b);
- Try
- K(B);S_FLIGHT
- Vars
- S(i);N_GUARD::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(b);
- Try
- S(F);
- Vars
- K(f);N_SPINS(g),P_SPINP(d),S_FLIGHT::B(A)
- K(f);N_SPINS(g),P_SPINS(i),S_FLIGHT::B(A)
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- Refutation
- P(d);
- Try
- S(F);
- Vars
- K(f);N_SPINS(g),P_SPINP(d),S_FLIGHT::B(A)
- K(f);N_SPINS(g),P_SPINS(i),S_FLIGHT,XS(F)::B(A)
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- Refutation
- P(d);
- Try
- B(A);
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(a);
- Try
- B(A);
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);OGATE::R1(E)
- Refutation
- P(a);
- Try
- B(I);XP(b)
- Vars
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- Refutation
- P(d);
- Try
- R(E);XP(d)
- Threat
- R1(E)
- Vars
- S(i);N_GUARD::QAR2(G),XS(g)
- Refutation
- P(h);XR(E)
- Try
- Q(G);CHECK,N_PINS(g)
- Vars
- S(g);CHECK,N_GUARD,P_SPINS(g)::QAR1(G),XS(g)
- Refutation
- P(b);XQ(G)
- Try
- Q(G);N_PINS(g)
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::QAR1(G),XS(g)
- S(i);N_GUARD::QAB1(G),XS(i)
- Refutation
- S(g);CHECK,XQ(G)
- Try
- Q(G);N_PINS(g)
- Threat
- QAR1(G)
- Vars
- S(g);CHECK,N_GUARD::QAR1(G),XS(g)
- Refutation
- S(g);CHECK
- Try
- Q(G);XP(h)
- Vars
- P(d);OGATE::R1(E)
- S(i);N_GUARD,SBLOCK::B(A)
- S(i);N_GUARD::QAR2(G),XS(g)
- Refutation
- B(e);N_SPINS(g),XQ(G)
- Try
- Actual
- S(F);
- Vars
- K(f);N_SPINS(g),OGATEB,P_SPINP(d),S_FLIGHT,XS(F)::B(A)
- K(f);N_SPINS(g),P_SPINS(i),S_FLIGHT::B(A)
- S(i);N_GUARD,XS(F)::QAR2(G),XS(g)
- S(i);::S(F),XP(b)
- S(i);N_GUARD::QAR2(G),XS(g)
- P(d);::R1(H),XS(i)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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