MESON Chess Problem Database

Problem Display
PID: 244410 (1q4bB/1n1p3B/Q2n3R/2PkN3/1P1p1P2/3Rp3/K3p3/6b1 w - - 0 1)

Dittrich, Stefan

Rochade Europa, 1987

1q4bB/1n1p3B/Q2n3R/2PkN3/1P1p1P2/3Rp3/K3p3/6b1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qxc4#
    • 1...Se4
      • 2.Qc4#
    • 1...Sf7
      • 2.Qc4#
    • 1...Sc8
      • 2.Qc4#
    • 1...Se8
      • 2.Qc4#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Rxd4#
      • 1...Sb5
        • 2.Sb6#
      • 1...Sf5!
    • 1.Sg4?
      • threat
        • 2.Rxd4#
      • 1...Sf5
        • 2.Sf6#
      • 1...Sb5!
    • 1.Be4+?
      • 1...Sxe4
        • 2.Qc4#
      • 1...Kxe4+!
    • 1.Rxd6+?
      • 1...Qxd6
        • 2.Qc4#
      • 1...Sxd6!
    • 1.Qxb7+?
      • 1...Qxb7
        • 2.Rxd6#
      • 1...Sxb7!
  • Keys
    • 1.Sxd7!
      • threat
        • 2.Rxd4#
      • 1...Sb5
        • 2.Sb6#
      • 1...Sf5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(f);N_GUARD::QAB1(G),XS(f)
    • S(f);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(B),XP(d)
      • Vars
        • S(f);::S(F)
      • Refutation
        • S(f);
    • Try
      • S(F);
      • Threat
        • R1(B),XP(d)
      • Vars
        • S(f);::S(F)
      • Refutation
        • S(f);
    • Try
      • B(I);CHECK
      • Vars
        • S(f);SBLOCK,XB(I)::QAB1(G)
      • Refutation
        • K(e);CHECK,N_SPINP(d),S_FLIGHT,XB(I)
    • Try
      • R(H);CHECK,XS(f)
      • Vars
        • Q(i);XR(H)::QAB1(G)
      • Refutation
        • S(g);XR(H)
    • Try
      • Q(G);CHECK,XS(g)
      • Vars
        • Q(i);XQ(G)::R1(H),XS(f)
      • Refutation
        • S(f);XQ(G)
  • Actual
    • S(F);XP(h)
    • Threat
      • R1(B),XP(d)
    • Vars
      • S(f);::S(F)
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