MESON Chess Problem Database

Problem Display
PID: 245432 (3r3n/1n2Q1p1/BBp5/1rpkN3/3P3R/P7/3P4/2NKR3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Sachova skladba, 2001

3r3n/1n2Q1p1/BBp5/1rpkN3/3P3R/P7/3P4/2NKR3

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Bc4#
    • 1...Rb2
      • 2.Bc4#
    • 1...Rb3
      • 2.Bc4#
    • 1...Ra5
      • 2.Bc4#
    • 1...Rxb6
      • 2.Bc4#
    • 1...cxd4
      • 2.Rxd4#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Sc3#
      • 1...cxd4
        • 2.Rxd4#
      • 1...Rb3
        • 2.Bc4#
      • 1...Rb1+!
    • 1.Se2?
      • threat
        • 2.Sc3#
      • 1...cxd4
        • 2.Sf4#
        • 2.Rxd4#
      • 1...Rb3
        • 2.Bc4#
      • 1...Rb1+!
    • 1.Sc4?
      • threat
        • 2.Se3#
        • 2.Qe6#
      • 1...cxd4
        • 2.Rxd4#
        • 2.Qe6#
      • 1...Rb3
        • 2.Re5#
        • 2.Qg5#
        • 2.Qe4#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Rd6
        • 2.Se3#
      • 1...Re8
        • 2.Se3#
      • 1...Kxc4!
    • 1.Sd7?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qe6#
      • 1...Re8!
    • 1.Qf7+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Bc7#
      • 1...Sxf7!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Se3#
      • 1...Kxd4
        • 2.Se3#
        • 2.Sf6#
        • 2.Qe4#
      • 1...cxd4
        • 2.Qe6#
      • 1...Rb3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);OGATE,P_PINS(A)::B(I)
    • R(a);OGATE::B(I)
    • R(a);OGATE,XB(J)::B(I)
    • P(b);OGATE,XP(F)::R1(G),XP(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(b);OGATE,XP(F)::R1(G),XP(b)
        • R(a);OGATE::B(I)
      • Refutation
        • R(a);CHECK
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(a);OGATE::B(I)
      • Refutation
        • R(a);CHECK
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::S(H)
      • Refutation
        • K(c);P_SPINR(a),S_FLIGHT,XS(H)
    • Try
      • S(H);
      • Threat
        • QAB1(K)
      • Vars
        • K(c);P_SPINR(a),S_FLIGHT::QAB(K)
      • Refutation
        • R(g);
    • Try
      • Q(K);CHECK
      • Refutation
        • S(h);XQ(K)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(c);P_SPINR(a),S_FLIGHT::S(H)
      • P(b);XP(F)::QAB1(K)
      • R(a);::QAR1(K)
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