MESON Chess Problem Database

Problem Display
PID: 202709 (r3k3/p2R1pRN/2p2P1n/1PN2p2/8/6BK/4p2p/3b3Q w q - 0 1)

Storozhenko, Ivan Ivanovich

Zadachi i Etyudi, 2015

r3k3/p2R1pRN/2p2P1n/1PN2p2/8/6BK/4p2p/3b3Q

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Re7#
    • 1...Sg4
      • 2.Rg8#
    • 1...Sg8
      • 2.Rxg8#
    • 1...f4
      • 2.Qe4#
    • 1...cxb5
      • 2.Qxa8#
  • Tries
    • 1.Se6?
      • threat
        • 2.Re7#
      • 1...Kxd7
        • 2.Qxc6#
      • 1...fxe6
        • 2.Rge7#
      • 1...Sg8!
    • 1.Rd3?
      • threat
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qc6#
        • 2.Qxa8#
      • 1...Rd8
        • 2.Re3#
      • 1...Rc8!
    • 1.Rgxf7?
      • threat
        • 2.Rfe7#
        • 2.Rf8#
      • 1...e1Q
        • 2.Rf8#
      • 1...e1R
        • 2.Rf8#
      • 1...Sg8
        • 2.Rf8#
      • 1...Sxf7!
  • Keys
    • 1.Rdxf7!
      • threat
        • 2.Rf8#
      • 1...Kd8
        • 2.Rf8#
      • 1...0-0-0
        • 2.Qxc6#
      • 1...Sxf7
        • 2.Rg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(i);SBLOCK::R1(G)
    • S(f);N_GUARD::R(H)
    • S(f);N_GUARD::R(H),XS(f)
    • P(d);N_GUARD::QAR(A)
    • P(e);OGATE,XP(D)::QAR(A),XR(i)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(G)
      • Vars
        • K(j);OGATEB,P_SPINP(h),S_FLIGHT,XR(G)::QAB1(A),XP(e)
        • P(h);OGATE,XS(E)::R1(H)
      • Refutation
        • S(f);
    • Try
      • R(G);
      • Threat
        • QAB(A),XP(e)
      • Vars
        • R(i);SBLOCK::R(G)
      • Refutation
        • R(i);
    • Try
      • R(H);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::R1(H)
        • S(f);::R1(H)
      • Refutation
        • S(f);XR(H)
  • Actual
    • R(G);XP(h)
    • Threat
      • R1(G)
    • Vars
      • K(j);P-FLIGHT::R(G)
      • K(j);0-0-0::QAR2(A),XP(e)
      • S(f);N_GUARD,SBLOCK,XR(G)::R(H)
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