MESON Chess Problem Database

Problem Display
PID: 240749 (8/1n6/1K1p1Q2/1ppk1p2/3N2pR/PrR4b/B1P5/8 w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

Thema Danicum, 1990

8/1n6/1K1p1Q2/1ppk1p2/3N2pR/PrR4b/B1P5/8

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qe6#
    • 1...cxd4
      • 2.Qxf5#
  • Tries
    • 1.Sxb3?
      • threat
        • 2.Sxc5#
        • 2.Qxf5#
      • 1...Bf1
        • 2.Qxf5#
      • 1...Sa5
        • 2.Qxf5#
      • 1...g3
        • 2.Sxc5#
        • 2.Rd3#
      • 1...b4
        • 2.Qxf5#
      • 1...c4
        • 2.Qxf5#
      • 1...f4
        • 2.Sxc5#
        • 2.Qf5#
      • 1...Ke4!
    • 1.Sf3?
      • threat
        • 2.Qxf5#
      • 1...gxf3
        • 2.Rd3#
      • 1...g3
        • 2.Rd3#
        • 2.Qf7#
      • 1...f4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Sxb5?
      • threat
        • 2.Qxf5#
      • 1...g3
        • 2.Rd3#
      • 1...f4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Sc6?
      • threat
        • 2.Qxf5#
      • 1...g3
        • 2.Se7#
        • 2.Rd3#
        • 2.Qf7#
      • 1...f4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Se6?
      • threat
        • 2.Qxf5#
      • 1...g3
        • 2.Sc7#
        • 2.Rd3#
      • 1...f4
        • 2.Qf5#
      • 1...Ke4!
    • 1.Rd3?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Bxb3#
      • 1...Ke4
        • 2.Qxf5#
      • 1...cxd4
        • 2.Rxd4#
      • 1...Sd8!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Qe6#
      • 1...g3
        • 2.Rd3#
      • 1...f4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);::QAB1(H)
    • P(e);SBLOCK,XS(E)::QAR2(H),XP(g)
  • Tries
    • Try
      • S(E);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAR2(H),XP(g)
        • S(i);::QAR2(H),XP(g)
        • P(d);::QAR2(H),XP(g)
        • P(e);::QAR2(H),XP(g)
      • Refutation
        • K(f);P_SPINP(c),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR2(H),XP(g)
      • Vars
        • P(c);XS(E)::R(D)
        • P(g);::QAR2(H)
      • Refutation
        • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT
    • Try
      • S(E);P_SPINS(E),XP(d)
      • Threat
        • QAR2(H),XP(g)
      • Vars
        • P(c);::R(D)
        • P(g);::QAR2(H)
      • Refutation
        • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR2(H),XP(g)
      • Vars
        • P(g);::QAR2(H)
      • Refutation
        • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR2(H),XP(g)
      • Vars
        • P(g);::QAR2(H)
      • Refutation
        • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT
    • Try
      • R(D);
      • Threat
        • QAB1(H)
      • Vars
        • K(f);S_FLIGHT::B(A),XR(a)
        • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT::QAB1(H),XP(g)
        • P(e);OGATE,P_SPINP(e),XS(E)::R1(D),XP(e)
      • Refutation
        • S(i);
  • Actual
    • S(E);
    • Threat
      • QAR2(H),XP(g)
    • Vars
      • K(f);N_SPINR(a),P_SPINP(c),S_FLIGHT::QAR2(H)
      • P(c);::R(D)
      • P(g);::QAR2(H)
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