MESON Chess Problem Database

Problem Display
PID: 150766 (2K5/4b3/3RN1Q1/1pP2p2/RqN1kB2/4Pn1p/2P3rr/7B w - - 0 1)

Mentasti, Gino

1st Prize, Warsaw Chess Club, 1936

2K5/4b3/3RN1Q1/1pP2p2/RqN1kB2/4Pn1p/2P3rr/7B

#2

11 + 9

655 La Presse 1946
23 Die Schwalbe 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sd2#
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qa3
      • 2.Sd2#
    • 1...Qc3
      • 2.Sd2#
    • 1...Qa5
      • 2.Sd2#
    • 1...Qxc5+
      • 2.Sxc5#
    • 1...Qb1
      • 2.Sd2#
    • 1...Qb2
      • 2.Sd2#
    • 1...Qb3
      • 2.Sd2#
    • 1...Rg1
      • 2.Rd4#
    • 1...Rxc2
      • 2.Rd4#
    • 1...Re2
      • 2.Rd4#
    • 1...Rf2
      • 2.Rd4#
    • 1...Rg3
      • 2.Rd4#
    • 1...Rg4
      • 2.Rd4#
    • 1...Rg5
      • 2.Rd4#
    • 1...Rxg6
      • 2.Rd4#
    • 1...Se1
      • 2.Sd2#
    • 1...Sg1
      • 2.Sd2#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sh4
      • 2.Sd2#
    • 1...Se5
      • 2.Sd2#
    • 1...Sg5
      • 2.Sd2#
  • Tries
    • 1.Sg5+?
      • 1...Rxg5
        • 2.Rd4#
        • 2.Qe6#
      • 1...Sxg5
        • 2.Sd2#
      • 1...Bxg5!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qc6#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Sd4
        • 2.Sg5#
      • 1...Se5
        • 2.Sd2#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Rd2
        • 2.Sg5#
      • 1...Rg8
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 20
  • Sets
    • Q(e);::R(D)+S(E),DCHECK
    • Q(e);::R(D)+S(E),DCHECK,XQ(e)
    • Q(e);CHECK,XP(G)::S(I),XQ(e)
    • R(a);P_SPINS(c)::R1(H)
    • R(a);P_SPINS(c),XP(B)::R1(H)
    • R(a);N_SPINP(h),P_SPINS(c),XQ(J)::R1(H)
    • S(c);N_GUARD,P_SPINR(a)::S(E)
    • S(c);N_GUARD,P_SPINR(a)::S(E),XS(c)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • S(c);P_SPINR(a),XS(I)::S(E)
      • Refutation
        • B(i);XS(I)
  • Actual
    • Q(J);N_PINP(h)
    • Threat
      • QAB(J)
    • Vars
      • Q(e);CHECK,XP(G)::S(I),XQ(e)
      • S(c);N_GUARD,P_SPINR(a)::S(I)
      • S(c);N_GUARD,P_SPINR(a)::S(E)
      • Q(e);::R(D)+S(E),DCHECK,XQ(e)
      • R(a);N_GUARD,P_SPINS(c)::S(I)
      • R(a);P_PINQ(J),P_SPINS(c)::R1(H)
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