MESON Chess Problem Database

Problem Display
PID: 121433 (8/2P2R1K/p5Q1/1qBk2P1/B5P1/2bN1Pn1/8/8 w - - 0 1)

Rott, J

Sachove listy, 1902

8/2P2R1K/p5Q1/1qBk2P1/B5P1/2bN1Pn1/8/8

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Bc6#
      • 2.Rd7#
      • 2.Qc6#
      • 2.Qd6#
    • 1...Qc6
      • 2.Bb3#
    • 1...Qd7
      • 2.Bb3#
    • 1...Qe8
      • 2.Bb3#
    • 1...Qb3
      • 2.Bxb3#
    • 1...Qa5
      • 2.Bb3#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Se2
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sh5
      • 2.Qe4#
  • Tries
    • 1.Bb3+?
      • 1...Qc4
        • 2.Rd7#
        • 2.Qd6#
      • 1...Qxb3!
    • 1.Rd7+?
      • 1...Kc4
        • 2.Qf7#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Qxd7+!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Rf6#
      • 1...Qxd3+
        • 2.Rf5#
      • 1...Kc4
        • 2.Rd7#
      • 1...Kc6
        • 2.Qa8#
      • 1...Ke6
        • 2.Re7#
        • 2.Rg7#
      • 1...Qxc5
        • 2.Rd7#
      • 1...Qc6
        • 2.Bb3#
        • 2.Rf5#
        • 2.Rd7#
      • 1...Qd7
        • 2.Rxd7#
      • 1...Qe8
        • 2.Rf5#
        • 2.Rd7#
      • 1...Qb6
        • 2.Rf5#
        • 2.Rd7#
      • 1...Qb8
        • 2.Rf5#
        • 2.Rd7#
        • 2.Rf8#
      • 1...Bf6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::B(C)
    • Q(c);N_GUARD,P_PINR(I)::B(C)
    • Q(c);N_GUARD::B(C),XQ(c)
    • S(b);N_GUARD::QAB1(G)
    • S(b);N_GUARD::QAB1(G),XS(b)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • Q(c);XB(C)
    • Try
      • R(I);CHECK
      • Refutation
        • Q(c);CHECK,XR(I)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+R(I)
    • Vars
      • Q(c);CHECK,XS(A)::QAB(G)+R(I),DCHECK
      • K(d);S_FLIGHT::QAB(G)+R(I)
      • K(d);P_SPINQ(c),S_FLIGHT::QAB(G)
      • Q(c);XB(E)::QAB(G)+R(I),DCHECK
      • Q(c);P_PINR(I)::QAB(G)+R(I),DCHECK,XQ(c)
      • B(a);::QAB(G)+R(I),XB(a)
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Developed and maintained by Brian Stephenson.
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