MESON Chess Problem Database

Problem Display
PID: 200702 (4Q3/b2P4/2rPP1p1/1PPk4/2pp3R/P1RP1N2/K4B2/8 w - - 0 1)

Popa, Nicolae

Problemas, 1993

4Q3/b2P4/2rPP1p1/1PPk4/2pp3R/P1RP1N2/K4B2/8

#2

13 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Rxd4#
    • 1...cxd3
      • 2.Rxd4#
    • 1...dxc3
      • 2.dxc4#
  • Tries
    • 1.Rh5+?
      • 1...g5
        • 2.Rxg5#
      • 1...gxh5!
  • Keys
    • 1.d8Q!
      • threat
        • 2.Qg5#
      • 1...Kxc5
        • 2.Qxc6#
      • 1...Rxc5
        • 2.Rxd4#
      • 1...Bxc5
        • 2.dxc4#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(d);SBLOCK,XP(I)::R1(G),XP(b)
    • P(a);XP(E)::R1(G),XP(b)
    • P(b);XR(D)::P(E),XP(a)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • P(e);P_SPINP(e)::R(G),XP(e)
      • Refutation
        • P(e);XR(G)
  • Actual
    • P(L);
    • Threat
      • QAR(L)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a),XP(I)::QAR1(M),XR(d)
      • R(d);SBLOCK,XP(I)::R1(G),XP(b)
      • B(f);SBLOCK,XP(I)::P(E),XP(a)
      • P(e);::QAR(L),XP(e)
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