MESON Chess Problem Database

Problem Display
PID: 243666 (7K/Q6p/n7/6R1/4Nk2/r3R2r/3N4/2BB4 w - - 0 1)

Banaszek, Marcin

Szachy, 1987

7K/Q6p/n7/6R1/4Nk2/r3R2r/3N4/2BB4

#2

8 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Raxe3
      • 2.Qf7#
    • 1...Rhxe3
      • 2.Qf7#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qf7#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Rh6
        • 2.Re1#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Ra5!
    • 1.Sf3?
      • threat
        • 2.Qf7#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Ra5
        • 2.Re1#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Rh6!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qf7#
      • 1...Ra5
        • 2.Sf3#
      • 1...Rh6
        • 2.Sb3#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK,XR(D)::QAR(G)
    • R(b);SBLOCK,XR(D)::QAR(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR(G)
      • Vars
        • R(b);OGATE,P_SPINR(b),XR(D)::QAB1(G),XR(b)
        • R(b);N_GUARD::B(A)+R(D)
        • S(d);N_GUARD::QAB(G),XS(d)
      • Refutation
        • R(a);
    • Try
      • S(C);
      • Threat
        • QAR(G)
      • Vars
        • R(a);OGATE,P_SPINR(a),XR(D)::QAB1(G),XR(a)
        • R(a);N_GUARD::B(A)+R(D)
        • S(d);N_GUARD::QAB(G),XS(d)
      • Refutation
        • R(b);
  • Actual
    • R(D);
    • Threat
      • QAR(G)
    • Vars
      • R(a);N_GUARD::B(A)+S(C)
      • R(b);N_GUARD::B(A)+S(C)
      • S(d);N_GUARD::QAB(G),XS(d)
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