MESON Chess Problem Database
Problem Display
PID: 12390 (6K1/8/4n1B1/1p3p2/1R2p3/3k4/1Q2R3/n2r4 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1978
#2
5 + 7
| 133 | The Problemist Supplement | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qd2#
- 1...Rc1
- 2.Qd2#
- 1...Re1
- 2.Qd2#
- 1...Rf1
- 2.Qd2#
- 1...Rg1
- 2.Qd2#
- 1...Rh1
- 2.Qd2#
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qxc2#
- 1...Sb3
- 2.Qc2#
- 1...Sd4
- 2.Rxd4#
- 1...Sf4
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sf8
- 2.Rd4#
- 1...e3
- 2.Bxf5#
- 1...f4
- 2.Bxe4#
- 1...Rb1
- Tries
- 1.Kh8?
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qxc2#
- 1...Rb1
- 2.Qd2#
- 1...Rc1
- 2.Qd2#
- 1...Re1
- 2.Qd2#
- 1...Rf1
- 2.Qd2#
- 1...Rg1
- 2.Qd2#
- 1...Sb3
- 2.Qc2#
- 1...Sd4
- 2.Rxd4#
- 1...Sf4
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sf8
- 2.Rd4#
- 1...e3
- 2.Bxf5#
- 1...f4
- 2.Bxe4#
- 1...Rh1+!
- 1...Rd2
- 1.Bxf5?
- threat
- 2.Bxe4#
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qxc2#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Rg1+!
- threat
- 1.Bh7?
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qxc2#
- 1...e3
- 2.Bxf5#
- 1...Rb1
- 2.Qd2#
- 1...Rc1
- 2.Qd2#
- 1...Re1
- 2.Qd2#
- 1...Rf1
- 2.Qd2#
- 1...Rh1
- 2.Qd2#
- 1...Sb3
- 2.Qc2#
- 1...Sd4
- 2.Rxd4#
- 1...Sf4
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sf8
- 2.Rd4#
- 1...f4
- 2.Bxe4#
- 1...Rg1+!
- 1...Rd2
- 1.Be8?
- threat
- 2.Bxb5#
- 1...Rc1
- 2.Qd2#
- 1...Sd4
- 2.Rxd4#
- 1...Sc7
- 2.Rd4#
- 1...Rg1+!
- threat
- 1.Rbxe4?
- threat
- 2.R2e3#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Re1
- 2.Qd2#
- 1...Sc2
- 2.Qxc2#
- 2.Qb3#
- 1...f4
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxf4#
- 1...fxe4!
- threat
- 1.Kh8?
- Keys
- 1.Rf2!
- 1...Ke3
- 2.Qe2#
- 1...e3
- 2.Bxf5#
- 1...Rb1
- 2.Qd2#
- 1...Rc1
- 2.Qd2#
- 1...Re1
- 2.Qd2#
- 1...Rf1
- 2.Qd2#
- 1...Rg1
- 2.Qd2#
- 1...Rh1
- 2.Qd2#
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...f4
- 2.Rf3#
- 1...Ke3
- 1.Rf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD,P_PINB(D)::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(a);N_GUARD::QAB1(A)
- S(g);N_GUARD::R1(C),XS(g)
- S(g);N_GUARD::R1(C)
- P(d);OGATEB,P_SPINP(f)::B(D),XP(f)
- P(f);OGATE,P_SPINP(d)::B(D),XP(d)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- R(b);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAB1(A)
- S(g);N_GUARD::R1(C),XS(g)
- S(g);N_GUARD::R1(C)
- P(d);OGATEB,P_SPINP(f)::B(D),XP(f)
- P(f);OGATE,P_SPINP(d)::B(D),XP(d)
- Refutation
- R(b);CHECK
- Try
- B(D);P_PINP(d),XP(f)
- Threat
- B(D),XP(d)
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(g);N_GUARD::R1(C)
- Refutation
- R(b);CHECK
- Try
- B(D);
- Vars
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAB1(A),XS(a)
- P(d);OGATEB,P_SPINP(f)::B(D),XP(f)
- R(b);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAB1(A)
- S(g);N_GUARD::R1(C),XS(g)
- S(g);N_GUARD::R1(C)
- P(f);OGATE,P_SPINP(d)::B(D),XP(d)
- Refutation
- R(b);CHECK
- Try
- B(D);
- Threat
- B(D),XP(e)
- Vars
- R(b);N_GUARD::QAR1(A)
- S(g);N_GUARD::R1(C),XS(g)
- S(g);N_GUARD::R1(C)
- Refutation
- R(b);CHECK
- Try
- R(C);XP(d)
- Threat
- R1(B)
- Vars
- R(b);N_GUARD::QAR1(A)
- Refutation
- P(f);P_SPINP(f),XR(C)
- Try
- Actual
- R(B);
- Vars
- K(c);P-FLIGHT::QAR1(A)
- P(d);OGATEB,P_SPINP(f),SBLOCK::B(D),XP(f)
- R(b);N_GUARD::QAR1(A)
- R(b);N_GUARD,P_PINB(D)::QAR1(A)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);N_GUARD::QAR2(A)
- S(a);N_GUARD::QAR2(A),XS(a)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- P(f);P_SPINP(d)::R(B)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).