MESON Chess Problem Database

Problem Display
PID: 266149 (q4b2/1B1P1Q1K/2pP3p/1N2P1pr/1pP1k3/1R1pp1B1/1nP5/2N4b w - - 0 1)

Svitek, Miroslav

The Problemist, 2022

q4b2/1B1P1Q1K/2pP3p/1N2P1pr/1pP1k3/1R1pp1B1/1nP5/2N4b

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Bxc6#
    • 1...Qa2
      • 2.Bxc6#
    • 1...Qa3
      • 2.Bxc6#
    • 1...Qa4
      • 2.Bxc6#
    • 1...Qa5
      • 2.Bxc6#
    • 1...Qa7
      • 2.Bxc6#
    • 1...Qb8
      • 2.Bxc6#
    • 1...Qd8
      • 2.Bxc6#
    • 1...Qe8
      • 2.Bxc6#
    • 1...Bf3
      • 2.Qg6#
    • 1...Sd1
      • 2.cxd3#
    • 1...Sa4
      • 2.cxd3#
    • 1...Sxc4
      • 2.cxd3#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qf5#
      • 1...Sxc4
        • 2.cxd3#
      • 1...Qe8
        • 2.Bxc6#
      • 1...g4
        • 2.Qf4#
      • 1...e2!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Rd4#
      • 1...Sxd3
        • 2.cxd3#
      • 1...Qa7
        • 2.Bxc6#
      • 1...e2
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(k);N_GUARD::B(I),XP(i)
    • B(a);SBLOCK::QAB(K)
    • S(b);N_GUARD::P(B),XP(c)
    • S(b);N_GUARD,XP(E)::P(B),XP(c)
    • P(g);N_GUARD::QAR1(K)
  • Tries
    • Try
      • K(L);S_FLIGHT
      • Threat
        • QAB1(K)
      • Vars
        • S(b);N_GUARD,XP(E)::P(B),XP(c)
        • Q(k);N_GUARD,P_PINQ(K)::B(I),XP(i)
        • P(g);N_GUARD::QAR1(K)
      • Refutation
        • P(d);
  • Actual
    • R(C);XP(c)
    • Threat
      • R1(C)
    • Vars
      • S(b);OGATE,XR(C)::P(B),XS(b)
      • Q(k);N_GUARD::B(I),XP(i)
      • P(d);::QAB(K)
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