MESON Chess Problem Database

Problem Display
PID: 200124 (2KN4/1p2pp2/2p2R1n/4k3/2r1B3/8/2pN1Q1b/5R2 w - - 0 1)

Gamza, Grigory Stepanovich

Suomen Shakki, 1990

2KN4/1p2pp2/2p2R1n/4k3/2r1B3/8/2pN1Q1b/5R2

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qc5#
    • 1...Rb4
      • 2.Qc5#
    • 1...Rd4
      • 2.Qxh2#
    • 1...Rxe4
      • 2.Qc5#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Sg4
      • 2.Sxf7#
    • 1...Sg8
      • 2.Sxf7#
    • 1...exf6
      • 2.Qxf6#
  • Tries
    • 1.Rf5+?
      • 1...Kd6
        • 2.Sxc4#
      • 1...Sxf5!
    • 1.Rxh6?
      • threat
        • 2.Sxf7#
      • 1...Rxe4
        • 2.Qc5#
      • 1...f5
        • 2.Sf7#
        • 2.Re6#
      • 1...f6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qxh2#
      • 1...Kxd6
        • 2.Sxc4#
      • 1...Rxe4
        • 2.Qc5#
      • 1...exd6
        • 2.Qf6#
      • 1...Rc3
        • 2.Qd4#
      • 1...Bg1
        • 2.Qg3#
        • 2.Qf4#
      • 1...Bg3
        • 2.Qxg3#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Sg4
        • 2.Sxf7#
      • 1...Sf5
        • 2.Sxf7#
      • 1...f5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD::QAR2(C)
    • R(c);SBLOCK::QAB(C),XB(b)
    • R(c);N_GUARD,XB(D)::QAR2(C)
    • R(c);N_GUARD::QAR2(C),XR(c)
    • S(f);N_GUARD::S(G),XP(i)
    • P(h);OGATE,XR(E)::QAB1(C),XP(h)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);S_FLIGHT::S(B),XR(c)
      • Refutation
        • S(f);XR(E)
    • Try
      • R(E);XS(f)
      • Threat
        • S(G),XP(i)
      • Vars
        • R(c);N_GUARD,XB(D)::QAR2(C)
      • Refutation
        • P(i);
  • Actual
    • R(E);
    • Threat
      • QAB(C),XB(b)
    • Vars
      • K(d);S_FLIGHT,XR(E)::S(B),XR(c)
      • R(c);N_GUARD,XB(D)::QAR2(C)
      • P(h);N_GUARD,XR(E)::QAB1(C)
      • R(c);N_GUARD::QAB1(C)
      • B(b);N_GUARD::QAB(C),XB(b)
      • B(b);N_GUARD::QAB1(C),XB(b)
      • S(f);N_GUARD::S(G),XP(i)
      • P(i);N_GUARD::R1(E)
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