MESON Chess Problem Database

Problem Display
PID: 60203 (8/qp3Q2/p1kr1nRr/P1B1P3/P2P4/1R1p1b2/K3N3/8 w - - 0 1)

Pape, Edouard

HM., Chemnitzer Tageblatt, 1925

8/qp3Q2/p1kr1nRr/P1B1P3/P2P4/1R1p1b2/K3N3/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qxb7#
    • 1...Qb6
      • 2.Rxb6#
    • 1...Qb8
      • 2.Rb6#
    • 1...Qa8
      • 2.Rb6#
  • Tries
    • 1.Bxa7?
      • threat
        • 2.Rc3#
        • 2.Rb6#
        • 2.Qxb7#
      • 1...Rxd4
        • 2.Sxd4#
        • 2.Qxb7#
      • 1...Re6
        • 2.Qxb7#
      • 1...Rd7
        • 2.Rc3#
        • 2.Qc4#
      • 1...Rd5
        • 2.Rb6#
        • 2.Qxb7#
      • 1...Rh7
        • 2.Rc3#
        • 2.Rb6#
      • 1...Bd5
        • 2.Qxb7#
      • 1...Se4
        • 2.Rb6#
        • 2.Qxb7#
        • 2.d5#
      • 1...Sd5
        • 2.Qxb7#
      • 1...b5
        • 2.Rc3#
      • 1...b6
        • 2.Rc3#
        • 2.Rxb6#
      • 1...Sd7!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rc3#
      • 1...Qxb6
        • 2.Rxb6#
      • 1...Rxd4
        • 2.Sxd4#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rd5
        • 2.Qc7#
      • 1...Bd5
        • 2.Qc7#
      • 1...Se4
        • 2.d5#
      • 1...Sd5
        • 2.Qe8#
      • 1...Sd7
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD,XB(G)::QAB1(J),XP(i)
    • Q(h);N_GUARD::R1(C),XQ(h)
    • Q(h);N_GUARD::R1(C)
  • Tries
    • Try
      • B(G);XQ(h)
      • Threat
        • DUALS(3)
      • Vars
        • R(e);::QAB1(J),XP(i)
        • B(b);P_PINR(C),SBLOCK::QAB1(J),XP(i)
        • S(f);P_SPINR(e),SBLOCK::QAB1(J),XP(i)
        • P(i);::R(C)
      • Refutation
        • S(f);P_SPINR(e)
  • Actual
    • B(G);
    • Threat
      • R(C)
    • Vars
      • Q(h);OGATE,XB(G)::R1(C),XQ(h)
      • R(e);P_SPINS(f),XP(E)::S(B),XR(e)
      • R(e);OGATEB::QAR2(J),XR(e)
      • R(e);P_SPINS(f),SBLOCK::QAR1(J)
      • B(b);P_PINR(C),SBLOCK::QAR1(J)
      • S(f);N_GUARD,P_SPINR(e),S_CUTB(b)::P(E)
      • S(f);N_GUARD,P_SPINR(e),SBLOCK::QAB(J)
      • S(f);OGATE,P_SPINR(e),SBLOCK::QAB(J),XB(b)
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