MESON Chess Problem Database

Problem Display
PID: 196256 (6Q1/1p6/8/1Pb1Bp1K/R1NqkP2/7p/B1P1P2n/3R4 w - - 0 1)

Janevski, Zivko

Sachova skladba, 2013

6Q1/1p6/8/1Pb1Bp1K/R1NqkP2/7p/B1P1P2n/3R4

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qd5#
    • 1...Qg1
      • 2.Qd5#
    • 1...Qb2
      • 2.Qd5#
    • 1...Qf2
      • 2.Qd5#
    • 1...Qc3
      • 2.Qd5#
    • 1...Qe3
      • 2.Sd2#
      • 2.Sd6#
      • 2.Qd5#
    • 1...Qd3
      • 2.cxd3#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Ba3
      • 2.Rxd4#
    • 1...Bb4
      • 2.Rxd4#
    • 1...Bd6
      • 2.Rxd4#
    • 1...Be7
      • 2.Rxd4#
    • 1...Bf8
      • 2.Rxd4#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Sd2#
      • 1...Qxd3
        • 2.cxd3#
      • 1...Qxc4
        • 2.Qd5#
      • 1...Bb4
        • 2.Rxd4#
      • 1...Sf3
        • 2.exf3#
      • 1...Sf1!
    • 1.Qd5+?
      • 1...Kxd5
        • 2.Sd6#
      • 1...Qxd5!
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...hxg2!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Sd2#
      • 1...Kd5
        • 2.Sd6#
      • 1...Qxc4
        • 2.Qd3#
      • 1...Qd2
        • 2.Sxd2#
        • 2.Sd6#
      • 1...Bb4
        • 2.Rxd4#
      • 1...Sf1
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(c);N_GUARD::QAB1(K)
    • Q(c);OGATE::P(C),XQ(c)
    • Q(c);N_GUARD::QAB1(K),XQ(c)
    • B(e);N_GUARD::R1(A),XQ(c)
  • Tries
    • Try
      • R(A);
      • Threat
        • S(F)
      • Vars
        • Q(c);OGATE,XR(A)::P(C),XQ(c)
        • Q(c);N_GUARD,P_SPINQ(c),XS(F)::QAB1(K)
        • B(e);N_GUARD::R1(A),XQ(c)
        • S(a);OGATE::P(D),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(K);CHECK
      • Vars
        • K(d);P_SPINQ(c),S_FLIGHT,XQ(K)::B(B)+S(F)
      • Refutation
        • Q(c);XQ(K)
    • Try
      • Q(K);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(K),XS(a)
      • Refutation
        • P(b);XQ(K)
  • Actual
    • Q(K);
    • Threat
      • S(F)
    • Vars
      • K(d);P_SPINQ(c),S_FLIGHT::B(B)+S(F)
      • Q(c);N_GUARD,P_SPINQ(c),XS(F)::QAB1(K)
      • B(e);N_GUARD::R1(A),XQ(c)
      • S(a);N_GUARD::QAB1(K)
      • S(a);N_GUARD::QAB1(K),XS(a)
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