MESON Chess Problem Database

Problem Display
PID: 206235 (2r5/B1pN4/1N6/1Q1p4/3pk1P1/2P1b1Kp/2p1RPb1/3rnB2 w - - 0 1)

Mosiashvili, Givi

Probleemblad, 2019

2r5/B1pN4/1N6/1Q1p4/3pk1P1/2P1b1Kp/2p1RPb1/3rnB2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qxd5#
    • 1...d3
      • 2.Rxe3#
      • 2.Qxd5#
  • Tries
    • 1.Bxg2+?
      • 1...Sxg2
        • 2.f3#
      • 1...Sf3
        • 2.Bxf3#
      • 1...hxg2!
    • 1.f4?
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...cxb6
        • 2.Sf6#
      • 1...Rf8
        • 2.Sc5#
      • 1...Sd3
        • 2.Sf6#
        • 2.Qxd5#
      • 1...c5
        • 2.Sf6#
      • 1...dxc3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Rxe3#
      • 1...dxc3
        • 2.Rxe3#
      • 1...dxc4
        • 2.Qf5#
      • 1...Sd3
        • 2.Sf6#
      • 1...c5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAB1(G),XP(i)
    • S(b);SBLOCK::QAB1(G),XP(i)
  • Tries
    • Try
      • B(A);CHECK,XB(d)
      • Vars
        • S(b);N_GUARD,XB(A)::P(C)
        • S(b);N_GUARD,P_SPINS(b)::B(A),XS(b)
      • Refutation
        • P(f);XB(A)
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);XS(H)::S(J)
        • R(k);::S(J)
        • P(j);::S(J)
      • Refutation
        • P(g);XP(D)
  • Actual
    • S(H);
    • Threat
      • S(J)
    • Vars
      • K(h);N_SPINB(e),S_FLIGHT::B(A)+R(B),DCHECK,XB(e)
      • P(g);N_GUARD,XP(D)::R1(B),XB(e)
      • P(i);OGATE,XS(H)::QAB1(G)
      • S(b);SBLOCK::S(J)
      • P(j);N_GUARD::S(H)
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