MESON Chess Problem Database

Problem Display
PID: 174461 (2Q5/1R1N4/3P4/2pkP1K1/3r2p1/1n1p2P1/BB1P4/2R5 w - - 0 1)

Amirov, Talip Khasanovich

4th HM., Busmen's Chess Review, 1971-1972

2Q5/1R1N4/3P4/2pkP1K1/3r2p1/1n1p2P1/BB1P4/2R5

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qg8#
    • 1...Ra4
      • 2.Sf6#
    • 1...Rb4
      • 2.Sf6#
    • 1...Rc4
      • 2.Sf6#
    • 1...Re4
      • 2.Sb6#
      • 2.Sf6#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Sb6#
        • 2.Sf6#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rb4
        • 2.Sf6#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rc4
        • 2.Sb6#
        • 2.Sf6#
      • 1...c4
        • 2.Sb6#
        • 2.Sf6#
      • 1...Rf4+!
    • 1.Sb6+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kxe5!
    • 1.Re1?
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Bxb3#
        • 2.Qxc5#
      • 1...Ke6
        • 2.Sb6#
        • 2.Sf6#
        • 2.Qg8#
      • 1...Rb4!
    • 1.Rxc5+?
      • 1...Ke6
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
        • 2.Qe8#
        • 2.Qg8#
      • 1...Ke4!
    • 1.Qxc5+?
      • 1...Ke6
        • 2.Sf8#
      • 1...Ke4!
  • Keys
    • 1.Rc4!
      • 1...Kxc4
        • 2.Bxb3#
        • 2.Qxc5#
      • 1...Ke4
        • 2.Qc6#
      • 1...Ke6
        • 2.Qg8#
      • 1...Rxc4
        • 2.Sf6#
      • 1...Sxd2
        • 2.Rxd4#
      • 1...Rf4
        • 2.Sb6#
      • 1...Re4
        • 2.Sb6#
      • 1...Sa1
        • 2.Rxd4#
      • 1...Sc1
        • 2.Rxd4#
      • 1...Sa5
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • K(f);S_FLIGHT::QAB(K)
    • R(c);::S(J)
    • R(c);N_SPINS(a)::S(J)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • DUALS(4)
      • Refutation
        • R(c);CHECK
    • Try
      • S(J);CHECK
      • Vars
        • K(f);N_SPINS(a),S_FLIGHT::QAB1(K)
      • Refutation
        • K(f);N_SPINS(a),P-FLIGHT,P_SPINR(c),XP(F)
    • Try
      • R(A);
      • Threat
        • S(J)
      • Refutation
        • R(c);
    • Try
      • R(A);CHECK,XP(e)
      • Refutation
        • K(f);N_SPINS(a),S_FLIGHT
    • Try
      • Q(K);CHECK,XP(e)
      • Vars
        • K(f);S_FLIGHT::S(J)
      • Refutation
        • K(f);N_SPINS(a),S_FLIGHT
  • Actual
    • R(A);N_PINS(a)
    • Vars
      • K(f);P_SPINR(c),S_FLIGHT::QAB(K)
      • K(f);S_FLIGHT::QAB(K)
      • R(c);SBLOCK,XR(A)::S(J)
      • S(a);XP(D)::B(B)+R(A),DCHECK,XR(c)
      • R(c);::S(J)
      • S(a);::B(B)+R(A),DCHECK,XR(c)
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