MESON Chess Problem Database
Problem Display
PID: 134023 (8/8/Q1N5/1r3n2/1Pk2K2/1ppR4/4p3/1B2B3 w - - 0 1)
Lewis, Robert Tony
The Field, 1964
(First published on Thu Jun 18 1964)
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sh4
- 2.Rd4#
- 1...Sd6
- 2.Rd4#
- 1...Sh6
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...b2
- 2.Qa2#
- 1...c2
- 2.Se5#
- 1...Se3
- Tries
- 1.Kf3?
- 1...Sd4+
- 2.Rxd4#
- 1...b2
- 2.Qa2#
- 1...c2
- 2.Se5#
- 1...Se3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sd6
- 2.Rd4#
- 1...Sh6
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sh4+!
- 1...Sd4+
- 1.Bc2?
- 1...Sd4
- 2.Rxd4#
- 1...Se3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sh4
- 2.Rd4#
- 1...Sd6
- 2.Rd4#
- 1...Sh6
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...b2
- 2.Qa2#
- 1...bxc2!
- 1...Sd4
- 1.Bxc3?
- threat
- 2.Sa5#
- 2.Se5#
- 1...b2
- 2.Sa5#
- 2.Qa2#
- 1...e1Q
- 2.Sa5#
- 1...e1R
- 2.Sa5#
- 1...Sd4!
- threat
- 1.Rd5?
- threat
- 2.Rc5#
- 2.Qxb5#
- 1...b2
- 2.Ba2#
- 2.Qa2#
- 1...Sd4
- 2.Rxd4#
- 2.Rc5#
- 1...Sd6
- 2.Rd4#
- 2.Rc5#
- 1...c2
- 2.Qxb5#
- 1...Kxd5!
- threat
- 1.Rd6?
- threat
- 2.Bd3#
- 1...b2
- 2.Ba2#
- 2.Qa2#
- 1...Sd4
- 2.Rxd4#
- 1...c2
- 2.Sa5#
- 2.Se5#
- 1...Sxd6!
- threat
- 1.Rd7?
- threat
- 2.Bd3#
- 1...b2
- 2.Ba2#
- 2.Qa2#
- 1...Sd4
- 2.Rxd4#
- 1...c2
- 2.Sa5#
- 2.Se5#
- 1...Sd6!
- threat
- 1.Rd8?
- threat
- 2.Bd3#
- 1...b2
- 2.Ba2#
- 2.Qa2#
- 1...Sd4
- 2.Rxd4#
- 1...c2
- 2.Sa5#
- 2.Se5#
- 1...Sd6!
- threat
- 1.Kf3?
- Keys
- 1.Qa4!
- 1...Rxb4
- 2.Qxb4#
- 1...Sd4
- 2.Rxd4#
- 1...c2
- 2.Qxb3#
- 1...Ra5
- 2.Sxa5#
- 1...Rc5
- 2.b5#
- 1...Rd5
- 2.Rxc3#
- 1...Re5
- 2.Sxe5#
- 1...Rb6
- 2.Sa5#
- 2.Se5#
- 1...Rb7
- 2.Sa5#
- 2.Se5#
- 1...Rb8
- 2.Sa5#
- 2.Se5#
- 1...Se3
- 2.Rd4#
- 1...Sg3
- 2.Rd4#
- 1...Sh4
- 2.Rd4#
- 1...Sd6
- 2.Rd4#
- 1...Sh6
- 2.Rd4#
- 1...Se7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...b2
- 2.Qa2#
- 1...Rxb4
- 1.Qa4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(f);N_GUARD::R1(C)
- S(f);N_GUARD::R1(C),XS(f)
- P(b);OGATEB::QAB(F)
- P(c);::S(G)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(f);CHECK,N_GUARD::R1(C),XS(f)
- P(b);OGATEB::QAB(F)
- P(c);::S(G)
- S(f);N_GUARD::R1(C)
- Refutation
- S(f);CHECK
- Try
- B(A);
- Vars
- S(f);N_GUARD::R1(C),XS(f)
- S(f);N_GUARD::R1(C)
- P(b);OGATEB::QAB(F)
- Refutation
- P(b);XB(A)
- Try
- B(B);XP(c)
- Threat
- DUALS(2)
- Vars
- P(a);::S(G)
- Refutation
- S(f);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- P(c);::QAB1(F),XR(e)
- Refutation
- K(d);N_SPINR(e),S_FLIGHT,XR(C)
- Try
- R(C);
- Threat
- B(A)
- Vars
- S(f);N_GUARD::R1(C),XS(f)
- Refutation
- S(f);XR(C)
- Try
- R(C);
- Threat
- B(A)
- Vars
- S(f);N_GUARD::R1(C),XS(f)
- Refutation
- S(f);
- Try
- R(C);
- Threat
- B(A)
- Vars
- S(f);N_GUARD::R1(C),XS(f)
- Refutation
- S(f);
- Try
- Actual
- Q(F);N_PINR(e)
- Vars
- R(e);OGATE,P_SPINR(e),XP(D)::QAR1(F),XR(e)
- S(f);N_GUARD::R1(C),XS(f)
- P(c);::QAB1(F),XP(b)
- R(e);N_GUARD::S(G),XR(e)
- R(e);OGATE,SBLOCK::QAR(F)+P(D)
- R(e);SBLOCK::R1(C),XP(c)
- S(f);N_GUARD::R1(C)
- P(b);OGATEB::QAB(F)
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