MESON Chess Problem Database
Problem Display
PID: 51525 (1b6/B7/q1br3p/1pn4Q/p3p2K/1P6/NRNkBP1R/3r4 w - - 0 1)
Ellerman, Arnoldo
The Guardian, 1963
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Sa1#
- 2.Sa3#
- 2.Se3#
- 2.Scb4#
- 2.Sd4#
- 1...Sxb3
- 2.Be3#
- 1...Sd3
- 2.Be3#
- 1...Se6
- 2.Be3#
- 1...Sb7
- 2.Be3#
- 1...Sd7
- 2.Be3#
- 1...Re1
- Tries
- 1.Bxd1?
- threat
- 2.Qe2#
- 1...Kd3
- 2.Qe2#
- 1...b4!
- threat
- 1.Bc4?
- threat
- 2.Qe2#
- 2.f3#
- 2.f4#
- 1...Ra1
- 2.Qe2#
- 2.f4#
- 1...Rb1
- 2.Qe2#
- 2.f4#
- 1...Rc1
- 2.Qe2#
- 2.f4#
- 1...Re1
- 2.Sa1#
- 2.Sa3#
- 2.Se3#
- 2.Scb4#
- 2.Sd4#
- 1...Rf1
- 2.Qe2#
- 1...Rg1
- 2.Qe2#
- 1...Rh1
- 2.Qe2#
- 1...Rd3
- 2.f4#
- 1...Rd4
- 2.Qe2#
- 2.f4#
- 1...Rd5
- 2.Qe2#
- 2.f4#
- 1...Re6
- 2.Qe2#
- 2.f4#
- 1...Rf6
- 2.Qe2#
- 2.f4#
- 1...Rg6
- 2.Qe2#
- 1...Rd7
- 2.Qe2#
- 2.f4#
- 1...Rd8
- 2.Qe2#
- 2.f4#
- 1...Sd3
- 2.Be3#
- 1...e3
- 2.Qe2#
- 1...bxc4!
- threat
- 1.Bxd1?
- Keys
- 1.Bd3!
- threat
- 2.Qe2#
- 1...Kxd3
- 2.Qxd1#
- 1...Rxd3
- 2.f4#
- 1...Sxd3
- 2.Be3#
- 1...exd3
- 2.f3#
- 1...Re1
- 2.Scb4#
- threat
- 1.Bd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- S(f);OGATE,XP(G)::B(J)
- S(f);OGATE::B(J)
- Tries
- Try
- B(D);XR(a)
- Threat
- QAR1(I)
- Vars
- K(b);P-FLIGHT::QAB1(I)
- Refutation
- P(e);
- Try
- B(D);
- Threat
- DUALS(3)
- Vars
- R(a);::QAR1(I)
- R(a);P_PINR(F)::QAR1(I)
- R(i);::R(F)+P(E)
- R(i);::QAR1(I)
- S(f);OGATE::B(J)
- P(d);::QAR1(I)
- Refutation
- P(e);XB(D)
- Try
- Actual
- B(D);
- Threat
- QAR1(I)
- Vars
- K(b);P-FLIGHT,XB(D)::QAR2(I),XR(a)
- R(i);SBLOCK,XB(D)::R(F)+P(E)
- S(f);OGATE,SBLOCK,XB(D)::B(J)
- P(d);SBLOCK,XB(D)::R(F)+P(E)
- R(a);SBLOCK::R(B)+S(C)
Developed and maintained by Brian Stephenson.
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