MESON Chess Problem Database

Problem Display
PID: 245883 (b7/2p1K1p1/5p1q/B4B1n/7N/p1Qpk1N1/rRp2p1b/5R2 w - - 0 1)

Dombrovskis, Alfreds A

Shakhmatna misl, 1986

b7/2p1K1p1/5p1q/B4B1n/7N/p1Qpk1N1/rRp2p1b/5R2

#2

8 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qxd3#
    • 1...Sf4
      • 2.Qc5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qd2#
        • 2.Qxd3#
      • 1...Kxe2
        • 2.Qxd3#
      • 1...c1Q
        • 2.Qd4#
        • 2.Qxd3#
      • 1...c1S
        • 2.Qd2#
        • 2.Qd4#
        • 2.Qc5#
      • 1...c1B
        • 2.Qd4#
        • 2.Qxd3#
        • 2.Qc5#
      • 1...Be4
        • 2.Qd2#
      • 1...Sf4
        • 2.Qd2#
      • 1...Bd6+!
    • 1.Bxc7?
      • threat
        • 2.Qxd3#
      • 1...c1S
        • 2.Qc5#
      • 1...Sf4
        • 2.Bb6#
      • 1...Be4!
    • 1.Qe5+?
      • 1...Be4
        • 2.Qxe4#
      • 1...fxe5!
  • Keys
    • 1.Rxf2!
      • threat
        • 2.Qc5#
      • 1...Kxf2
        • 2.Qe1#
      • 1...Bf3
        • 2.Rxf3#
      • 1...c1Q
        • 2.Qxd3#
      • 1...c1R
        • 2.Qxd3#
      • 1...Qf4
        • 2.Re2#
      • 1...c5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(j);SBLOCK::QAR1(C),XP(f)
    • S(h);SBLOCK::QAB(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);N_SPINP(f),P-FLIGHT,P_SPINP(b),XS(D)::QAB1(C),XP(f)
        • B(m);::QAB1(C)
        • S(h);::QAB1(C)
      • Refutation
        • B(d);CHECK
    • Try
      • B(F);XP(k)
      • Threat
        • QAR1(C),XP(f)
      • Vars
        • P(b);::QAB(C)
        • S(h);SBLOCK::B(F)
      • Refutation
        • B(m);
    • Try
      • Q(C);CHECK,N_PINP(f)
      • Vars
        • B(m);N_GUARD,P_SPINB(m)::QAR1(C),XB(m)
      • Refutation
        • P(i);XQ(C)
  • Actual
    • R(A);XP(c)
    • Threat
      • QAB(C)
    • Vars
      • K(g);N_SPINP(f),P_SPINP(b),S_FLIGHT,XR(A)::QAB1(C)
      • B(m);N_GUARD::R1(A),XB(m)
      • P(b);::QAR1(C),XP(f)
      • Q(j);SBLOCK::R1(A)
      • P(k);::QAB(C),XP(k)
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