MESON Chess Problem Database

Problem Display
PID: 144085 (3K2n1/2pNR2b/2pQ1NB1/3r1Pp1/n7/1PPkP3/6R1/4B3 w - - 0 1)

Adabashev, Mark Ivanovich

Magyar Sakkvilag, 1930

3K2n1/2pNR2b/2pQ1NB1/3r1Pp1/n7/1PPkP3/6R1/4B3

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxd4#
    • 1...Sb2
      • 2.Sc5#
    • 1...Sxc3
      • 2.Sc5#
      • 2.Rd2#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sb6
      • 2.Sc5#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sxc7#
        • 2.Rd2#
      • 1...Sxc3
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Rd2#
      • 1...cxd5
        • 2.Qxd5#
        • 2.Qa6#
      • 1...cxd6
        • 2.Sb4#
        • 2.Rd2#
      • 1...Sb6
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Rd2#
      • 1...Sf6
        • 2.Sb4#
        • 2.Sf4#
        • 2.Rd2#
      • 1...Sxe7!
    • 1.Qb4?
      • threat
        • 2.Rd2#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sxc3
        • 2.Rd2#
        • 2.Qxc3#
        • 2.Qc4#
      • 1...Sxf6
        • 2.Rd2#
        • 2.Qc4#
      • 1...Sxe7
        • 2.Qe4#
      • 1...Re5
        • 2.Qd4#
      • 1...Rd4
        • 2.Rd2#
        • 2.Qxd4#
      • 1...Rc5
        • 2.Rd2#
        • 2.Qd4#
        • 2.Qe4#
      • 1...Sb2
        • 2.Rd2#
        • 2.Qe4#
      • 1...Sc5
        • 2.Rd2#
        • 2.Qc4#
      • 1...Sb6
        • 2.Rd2#
        • 2.Qe4#
      • 1...Rxd7+!
    • 1.Qf4?
      • threat
        • 2.Qf1#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Rxd7+
        • 2.Rxd7#
      • 1...Sxc3
        • 2.Rd2#
        • 2.Qc4#
      • 1...Sxf6
        • 2.Qf1#
        • 2.Qc4#
      • 1...Sxe7
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf1#
        • 2.Qxd4#
      • 1...Rc5
        • 2.Qf1#
        • 2.Qd4#
        • 2.Qe4#
      • 1...Re5
        • 2.Sxe5#
        • 2.Qd4#
      • 1...Sb2
        • 2.Qf1#
        • 2.Qe4#
      • 1...Sc5
        • 2.Qf1#
        • 2.Qc4#
      • 1...Sb6
        • 2.Qf1#
        • 2.Qe4#
      • 1...gxf4!
    • 1.Qe5?
      • threat
        • 2.Rd2#
        • 2.Qe4#
      • 1...Rxd7+
        • 2.Rxd7#
      • 1...Sxc3
        • 2.Rd2#
        • 2.Qxc3#
      • 1...Sxf6
        • 2.Rd2#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.Rd2#
      • 1...Rxe5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.e4#
      • 1...Rxd7+
        • 2.Rxd7#
      • 1...Rxf5
        • 2.Se5#
      • 1...Sxc3
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);OGATE::QAR1(G),XR(c)
    • S(b);N_GUARD::S(J)
    • S(b);N_GUARD::S(J),XS(b)
    • P(e);N_GUARD::QAR2(G),XR(c)
  • Tries
    • Try
      • S(H);XR(c)
      • Threat
        • DUALS(4)
      • Refutation
        • S(h);XR(K)
    • Try
      • Q(G);N_PINR(c),P_SPINS(J)
      • Threat
        • DUALS(3)
      • Vars
        • S(h);XR(K)::QAB1(G)
        • R(c);N_GUARD,N_PINS(J)::QAR1(G)
      • Refutation
        • R(c);CHECK,XS(J)
    • Try
      • Q(G);N_PINR(c),P_SPINS(J)
      • Threat
        • DUALS(3)
      • Vars
        • R(c);CHECK,OGATE,XS(J)::R(K),XR(c)
        • S(h);XR(K)::QAB1(G)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);N_PINR(c),P_SPINS(J)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,OGATE,XS(J)::R(K),XR(c)
        • S(h);XS(H)::R1(B)
        • R(c);N_GUARD::QAR1(G),XR(c)
        • S(b);::R1(B)
      • Refutation
        • R(c);N_PINS(J),XQ(G)
  • Actual
    • Q(G);N_PINR(c),P_SPINS(J)
    • Threat
      • QAR(G)+P(E)
    • Vars
      • R(c);CHECK,OGATE,XS(J)::R(K),XR(c)
      • R(c);N_PINS(J),P_SPINR(c),XP(F)::S(J)
      • S(b);SBLOCK,XP(D)::R1(B)
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