MESON Chess Problem Database

Problem Display
PID: 266257 (nB3N2/1p2r2p/Rrk3qR/P4Q2/b1NP4/1B1n4/3P4/1K2b3 w - - 0 1)

Leites, Samuil Davidovich

2nd Prize, 04. FIDE Ty., 1962-1963

nB3N2/1p2r2p/Rrk3qR/P4Q2/b1NP4/1B1n4/3P4/1K2b3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Rxd6#
    • 1...Re2
      • 2.Qd7#
    • 1...Re3
      • 2.Qd7#
    • 1...Re4
      • 2.Qd7#
    • 1...Re5
      • 2.Qd7#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Re8
      • 2.Qd7#
    • 1...Sb4
      • 2.Bxa4#
    • 1...Sc7
      • 2.Rxb6#
  • Tries
    • 1.Rxg6+?
      • 1...Re6
        • 2.Rxe6#
      • 1...hxg6!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Qd5#
      • 1...Bxb3
        • 2.Qb5#
      • 1...Sc7
        • 2.Rxb6#
      • 1...Re5
        • 2.Qd7#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Sc1
        • 2.Qc2#
      • 1...Sb2
        • 2.Bd5#
      • 1...Sf2
        • 2.Qc2#
      • 1...Sb4
        • 2.Bxa4#
      • 1...Sf4
        • 2.Qc2#
      • 1...Sc5
        • 2.d5#
      • 1...Se5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(f);OGATE::R1(I),XQ(f)
    • R(h);N_GUARD::QAB1(G)
    • R(h);N_GUARD::QAB1(G),XR(h)
    • S(b);N_PINB(C),P_PINQ(G)::B(C),XB(c)
    • S(j);N_GUARD::R1(H),XR(d)
  • Tries
    • Try
      • R(I);CHECK,XQ(f)
      • Vars
        • R(h);N_GUARD::R(I),XR(h)
      • Refutation
        • P(i);XR(I)
  • Actual
    • S(D);
    • Threat
      • QAB1(G)
    • Vars
      • B(c);N_GUARD,XB(C)::QAB1(G)
      • S(j);N_GUARD::R1(H),XR(d)
      • R(h);N_GUARD::QAB1(G)
      • R(h);N_GUARD::QAB1(G),XR(h)
      • S(b);OGATE,P_PINQ(G)::QAR(G)
      • S(b);N_PINB(C),P_PINQ(G)::B(C)
      • S(b);N_PINB(C),P_PINQ(G)::B(C),XB(c)
      • S(b);P_PINQ(G),SBLOCK::P(E)
      • S(b);P_PINQ(G),S_CUTR(h)::QAB(G)
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