MESON Chess Problem Database

Problem Display
PID: 243640 (4r3/1PBr4/Q7/n1Nk1pbR/KPR5/p1pP1N2/2n2p2/4q3 w - - 0 1)

Balcu, Silviu

Revista Romana de Sah, 1962

4r3/1PBr4/Q7/n1Nk1pbR/KPR5/p1pP1N2/2n2p2/4q3

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Rde7
      • 2.Qd6#
    • 1...Rf7
      • 2.Qd6#
    • 1...Rg7
      • 2.Qd6#
    • 1...Rh7
      • 2.Qd6#
    • 1...Sa1
      • 2.Rd4#
    • 1...Se3
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sxc4
      • 2.dxc4#
    • 1...Sxb7
      • 2.Qxb7#
  • Tries
    • 1.Se6?
      • threat
        • 2.Rc5#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sxb7
        • 2.Qc6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Be3
        • 2.Rxf5#
      • 1...Be7
        • 2.Sf4#
      • 1...Sb3
        • 2.Qc6#
      • 1...Qe3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rc5#
      • 1...Rxc7
        • 2.Qd6#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sxb7
        • 2.Qc6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Qe3
        • 2.Sxc3#
      • 1...Be3
        • 2.Sf6#
      • 1...Be7
        • 2.Rxf5#
      • 1...Sb3
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(j);N_GUARD::QAR1(H),XR(j)
    • R(j);N_GUARD::QAR1(H)
    • S(b);N_GUARD::R1(E)
    • S(b);N_GUARD::R1(E),XS(b)
    • S(f);OGATE,XR(E)::P(A),XS(f)
    • S(f);OGATE,XP(I)::QAB(H),XS(f)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(E)
      • Vars
        • R(j);XB(J)::S(F),XR(j)
        • S(f);OGATE,XR(E)::QAB1(H),XS(f)
        • S(f);N_GUARD,XP(I)::QAB1(H)
        • R(j);N_GUARD::QAR1(H),XR(j)
        • S(f);N_GUARD::QAB1(H),XS(f)
        • B(i);OGATE,P_SPINP(h)::R(G),XP(h)
        • B(i);N_GUARD,P_SPINP(h)::S(F)
        • S(f);N_GUARD::QAB1(H)
      • Refutation
        • Q(a);
  • Actual
    • S(F);
    • Threat
      • R1(E)
    • Vars
      • R(j);N_GUARD,XB(J)::QAR1(H)
      • S(f);OGATE,XR(E)::QAB1(H),XS(f)
      • S(f);N_GUARD,XP(I)::QAB1(H)
      • R(j);N_GUARD::QAR1(H),XR(j)
      • S(f);N_GUARD::QAB1(H),XS(f)
      • Q(a);N_GUARD::S(F),XP(e)
      • B(i);N_GUARD,P_SPINP(h)::S(F)
      • B(i);OGATE,P_SPINP(h)::R(G),XP(h)
      • S(f);N_GUARD::QAB1(H)
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