MESON Chess Problem Database

Problem Display
PID: 157216 (2N5/2Rp3p/4k1p1/1b2PR2/2rp3N/7K/B5Q1/8 w - - 0 1)

Garofalo, Antonio

Lukashev, Viktor Sergeevich

Best Problems, 2007

2N5/2Rp3p/4k1p1/1b2PR2/2rp3N/7K/B5Q1/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Re7#
    • 1...d6
      • 2.Re7#
  • Tries
    • 1.Sxg6?
      • threat
        • 2.Rf6#
      • 1...Kxf5
        • 2.Qg4#
      • 1...hxg6!
    • 1.Bxc4+?
      • 1...d5
        • 2.Bxd5#
        • 2.Re7#
        • 2.Qxd5#
      • 1...Bxc4!
    • 1.Rc5?
      • threat
        • 2.Rf6#
        • 2.Qd5#
      • 1...gxf5
        • 2.Qd5#
        • 2.Qg8#
      • 1...d5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Rf6#
      • 1...d6!
    • 1.Rxd7?
      • threat
        • 2.Rd6#
        • 2.Re7#
        • 2.Qd5#
      • 1...Bxd7
        • 2.Bxc4#
      • 1...gxf5
        • 2.Re7#
        • 2.Qd5#
      • 1...Bc6
        • 2.Rd6#
        • 2.Re7#
        • 2.Qxc6#
      • 1...Kxd7!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sxd4#
      • 1...Kd5
        • 2.Sg5#
      • 1...Kxf5
        • 2.Qg4#
      • 1...gxf5
        • 2.Qg8#
      • 1...d3
        • 2.Sd4#
      • 1...d5
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(f);N_SPINR(a),OGATE::R1(G)
    • P(f);OGATE::R1(G)
  • Tries
    • Try
      • S(D);XP(e)
      • Threat
        • R1(F)
      • Vars
        • K(d);N_SPINR(a),OGATEB,S_FLIGHT,XR(F)::QAB1(B)
      • Refutation
        • P(g);XS(D)
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • B(c);XB(A)
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);N_SPINR(a)::QAB1(B),XP(f)
        • B(c);::R1(F)
      • Refutation
        • P(f);
    • Try
      • R(G);XP(f)
      • Threat
        • DUALS(3)
      • Vars
        • B(c);N_GUARD,SBLOCK,XR(G)::B(A),XR(a)
      • Refutation
        • K(d);N_SPINR(a),S_FLIGHT,XR(G)
  • Actual
    • S(D);
    • Threat
      • S(D),XP(b)
    • Vars
      • K(d);S_FLIGHT::QAB(B)+S(D)
      • K(d);N_SPINR(a),OGATEB,S_FLIGHT,XR(F)::QAB1(B)
      • P(e);OGATE,SBLOCK,XR(F)::QAB(B)
      • P(b);::S(D)
      • P(f);N_SPINR(a),SBLOCK::R1(F)
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