MESON Chess Problem Database

Problem Display
PID: 80018 (2r5/1B6/1n4R1/2p1kNK1/7p/1n3Qb1/1P1pq3/5b2 w - - 0 1)

di Scala, Pascal

La Cle, 1970

2r5/1B6/1n4R1/2p1kNK1/7p/1n3Qb1/1P1pq3/5b2

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qe4#
      • 2.Qe3#
    • 1...Qb5
      • 2.Qe4#
      • 2.Qe3#
    • 1...Qa6
      • 2.Qe4#
      • 2.Qe3#
    • 1...Qf2
      • 2.Qe4#
    • 1...Qh2
      • 2.Qe4#
      • 2.Qe3#
    • 1...Qe3+
      • 2.Qxe3#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Bh3
      • 2.Qxe2#
    • 1...Be1
      • 2.Qf4#
    • 1...Bf2
      • 2.Qf4#
    • 1...Bf4+
      • 2.Qxf4#
    • 1...Sa1
      • 2.Qc3#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sa5
      • 2.Qc3#
    • 1...Sa4
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...h3
      • 2.Qxg3#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qf6#
      • 1...Qe3+
        • 2.Qxe3#
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Kd4
        • 2.Qc3#
      • 1...Rc6
        • 2.Sxc6#
      • 1...Qf2
        • 2.Qe4#
      • 1...Rf8
        • 2.Sc6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qd5#
      • 1...Qxf3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf6#
      • 1...Qe3+
        • 2.Qxe3#
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Rc6
        • 2.Sxc6#
      • 1...Qf2
        • 2.Qe4#
      • 1...Rf8
        • 2.Sc6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(c);N_GUARD::QAR1(B)
    • Q(c);CHECK,N_GUARD::QAR2(B),XQ(c)
    • Q(c);N_GUARD::QAR1(B),XQ(c)
    • B(a);N_GUARD::QAR(B),XQ(c)
    • B(e);N_GUARD::QAB1(B)
    • B(e);CHECK,N_GUARD::QAB1(B),XB(e)
    • S(d);N_GUARD::QAB(B)
    • S(i);N_GUARD::QAR1(B)
    • S(i);N_GUARD::QAR1(B),XS(i)
    • P(f);N_GUARD::QAB(B),XB(e)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR2(B),XQ(c)
        • B(e);CHECK,N_GUARD::QAB1(B),XB(e)
        • K(h);S_FLIGHT::QAB1(B)
        • R(j);N_GUARD::S(C),XR(j)
        • Q(c);N_GUARD::QAR1(B)
        • R(j);N_GUARD::S(C)
        • S(i);N_GUARD::QAR1(B),XS(i)
        • S(i);N_GUARD::QAR1(B)
      • Refutation
        • Q(c);XQ(B)
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • Q(c);CHECK,N_GUARD::QAR2(B),XQ(c)
      • B(e);CHECK,N_GUARD::QAB1(B),XB(e)
      • K(h);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
      • Q(c);XQ(B)::S(C),XQ(c)
      • R(j);N_GUARD::S(C),XR(j)
      • Q(c);N_GUARD::QAR1(B)
      • R(j);N_GUARD::S(C)
      • S(i);N_GUARD::QAR1(B),XS(i)
      • S(i);N_GUARD::QAR1(B)
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Developed and maintained by Brian Stephenson.
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