MESON Chess Problem Database

Problem Display
PID: 264241 (2r1k3/2pR3N/p2pp2K/1Qn1N2b/8/8/8/8 w - - 0 1)

Solarczyk, Rudolf

Prace, 1966

2r1k3/2pR3N/p2pp2K/1Qn1N2b/8/8/8/8

#2

5 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Qxb8#
    • 1...Sxd7
      • 2.Qxd7#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Sf6#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Se4!
    • 1.Re7+?
      • 1...Kd8
        • 2.Sc6#
      • 1...Kxe7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Re7#
      • 1...Kxd7
        • 2.Sf6#
      • 1...Sxd7
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATEB::QAR(A),XR(g)
    • S(a);OGATE,P_SPINS(a),XR(D)::QAB1(A),XS(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • S(E)
      • Vars
        • S(a);OGATE,P_SPINS(a),XR(D)::QAB1(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • R(D);CHECK
      • Vars
        • K(h);P-FLIGHT::S(B)
      • Refutation
        • K(h);P-FLIGHT,XR(D)
  • Actual
    • S(B);
    • Threat
      • R1(D)
    • Vars
      • K(h);N_GUARD,S_FLIGHT,XR(D)::S(E)
      • S(a);OGATE,SBLOCK,XR(D)::QAB(A),XB(b)
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