MESON Chess Problem Database

Problem Display
PID: 245781 (7B/3p4/K2P4/1Qp1R3/3k2p1/1pr1n3/2p1R3/2b1r1N1 w - - 0 1)

Wrobel, Marian

Norsk Sjakkblad, 1951

7B/3p4/K2P4/1Qp1R3/3k2p1/1pr1n3/2p1R3/2b1r1N1

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxe2#
    • 1...Rd3
      • 2.Qxc5#
    • 1...Sd1
      • 2.Rxc5#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sf1
      • 2.Rxc5#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sg2
      • 2.Rxc5#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sd5
      • 2.R5e4#
    • 1...Sf5
      • 2.Rxf5#
    • 1...g3
      • 2.Sf3#
    • 1...c4
      • 2.R5xe3#
  • Tries
    • 1.Rd2+?
      • 1...Rd3
        • 2.Rxd3#
        • 2.Qxd3#
        • 2.Qxc5#
      • 1...Bxd2!
    • 1.Qc6?
      • threat
        • 2.Qe4#
      • 1...Kd3
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Rd3
        • 2.Re4#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rc4
        • 2.R5xe3#
      • 1...Sd5
        • 2.Qxd5#
      • 1...dxc6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qe4#
      • 1...Kd3
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Rc4
        • 2.R5xe3#
      • 1...Rd3
        • 2.Re4#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(b);XR(B)::S(A),XR(b)
    • R(e);N_GUARD,SBLOCK::QAB1(C),XP(i)
    • S(f);SBLOCK::B(G)+R(D),DCHECK
    • S(f);::B(G)+R(D),XS(f)
    • P(h);N_GUARD::S(A)
    • P(i);::B(G)+R(D),XS(f)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(g);P-FLIGHT::QAB1(C)
        • K(g);P-FLIGHT,P_SPINP(i)::QAR2(C)
        • R(e);SBLOCK::B(G)+R(D),XS(f)
        • S(f);N_GUARD::QAR1(C),XS(f)
      • Refutation
        • P(j);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(g);P-FLIGHT::QAB1(C)
      • K(g);P-FLIGHT::QAR2(C)
      • R(e);SBLOCK::B(G)+R(D),XS(f)
      • R(e);SBLOCK::B(G)+R(D),DCHECK
      • S(f);N_GUARD::QAR1(C),XS(f)
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