MESON Chess Problem Database
Problem Display
PID: 46498 (b7/2rR4/QNk5/4Rn2/6B1/3K4/8/6n1 w - - 0 1)
Loyd, Sam
New York State Chess Association, 1892
#2
6 + 5
| 15 | British Chess Magazine | 1910 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Se3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Se7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Ra7
- Tries
- 1.Kd2?
- 1...Sf3+
- 2.Bxf3#
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Se2
- 2.Bf3#
- 1...Sh3
- 2.Bf3#
- 1...Se3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Se7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Rxd7+!
- 1...Sf3+
- 1.Kc3?
- 1...Rxd7
- 2.Sxa8#
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Se3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg3
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh4
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh6
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Se7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg7
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Se2+!
- 1...Rxd7
- 1.Sd5+?
- 1...Kc5
- 2.Qc4#
- 2.Qb6#
- 1...Kxd7!
- 1...Kc5
- 1.Bxf5?
- threat
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 2.Be4#
- 1...Ra7
- 2.Be4#
- 2.Qb5#
- 1...Rb7
- 2.Be4#
- 2.Qb5#
- 1...Rc8
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sxc8#
- 2.Be4#
- 2.Qb5#
- 1...Bb7
- 2.Be4#
- 2.Qb5#
- 1...Rxd7+!
- threat
- 1.Red5?
- threat
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sc8#
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Sa4#
- 2.Sc4#
- 2.Sxa8#
- 2.Sxc8#
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Sd6
- 2.R7xd6#
- 1...Rxd7!
- threat
- 1.Rxf5?
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Rxd7+!
- 1...Ra7
- 1.Re6+?
- 1...Kc5
- 2.Qc4#
- 2.Qa5#
- 1...Sd6!
- 1...Kc5
- 1.Rd6+?
- 1...Sxd6
- 2.Sa4#
- 2.Sc4#
- 2.Sd7#
- 2.Sxa8#
- 2.Sc8#
- 1...Kxd6!
- 1...Sxd6
- 1.Qxa8+?
- 1...Rb7
- 2.Qxb7#
- 1...Kxb6!
- 1...Rb7
- 1.Kd2?
- Keys
- 1.Ra5!
- 1...Rxd7+
- 2.Sd5#
- 1...Ra7
- 2.Qb5#
- 1...Rb7
- 2.Qb5#
- 1...Rc8
- 2.Qb5#
- 1...Bb7
- 2.Qb5#
- 1...Se2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sh3
- 2.Bf3#
- 1...Se3
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg3
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd4
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh4
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sd6
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sh6
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Se7
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Sg7
- 2.Sa4#
- 2.Sc4#
- 2.Sd5#
- 2.Sxa8#
- 2.Sc8#
- 1...Rxd7+
- 1.Ra5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);CHECK,N_GUARD::B(B),XS(a)
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(a);N_GUARD::B(B)
- Refutation
- R(d);CHECK,XR(F)
- Try
- K(A);P-FLIGHT
- Vars
- R(d);SBLOCK,XR(F)::QAR(D)+S(E),XB(e)
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- Refutation
- S(a);CHECK
- Try
- S(E);CHECK
- Refutation
- K(c);P_SPINS(b),S_FLIGHT,XR(F)
- Try
- B(B);XS(b)
- Threat
- DUALS(5)
- Refutation
- R(d);CHECK,XR(F)
- Try
- R(C);
- Threat
- DUALS(4)
- Vars
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- R(d);P_PINR(C),XR(F)
- Try
- R(C);XS(b)
- Vars
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
- Refutation
- R(d);CHECK,XR(F)
- Try
- R(C);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- R(F);CHECK
- Refutation
- K(c);P-FLIGHT,XR(F)
- Try
- Q(D);CHECK,XB(e)
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB1(D),XR(d)
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- Actual
- R(C);
- Vars
- R(d);CHECK,SBLOCK,XR(F)::QAR(D)+S(E)
- R(d);::QAB1(D)
- B(e);SBLOCK::QAB1(D)
- S(a);N_GUARD::B(B)
- S(a);N_GUARD::B(B),XS(a)
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