MESON Chess Problem Database

Problem Display
PID: 254373 (3R4/8/2r5/4p1PB/qp4R1/3Q1Pb1/3B4/3k1n1K w - - 0 1)

Maleika, Gerhard

Problemas, 2021

3R4/8/2r5/4p1PB/qp4R1/3Q1Pb1/3B4/3k1n1K

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd2
      • 2.Qxd2#
  • Tries
    • 1.Bc3+?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Kc1!
    • 1.Be3+?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Ke1!
    • 1.Bxb4+?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Kc1!
    • 1.Bf4+?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Ke1!
    • 1.Re4?
      • threat
        • 2.f4#
      • 1...Sxd2
        • 2.Qxd2#
      • 1...Rh6
        • 2.Qb1#
      • 1...Bf4
        • 2.Re1#
      • 1...Sh2
        • 2.Bf4#
      • 1...Se3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.f4#
      • 1...Sxd2
        • 2.Qxd2#
      • 1...Rh6
        • 2.Rc1#
      • 1...Bf4
        • 2.Qxf1#
      • 1...Sh2
        • 2.Bxb4#
      • 1...Se3
        • 2.Bxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,P_SPINS(b),XB(B)::QAR1(C),XS(b)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);CHECK,XP(e)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • B(G)+P(D)
      • Vars
        • S(b);OGATE,P_SPINS(b),XB(B)::QAR1(C),XS(b)
        • R(g);N_GUARD,P_PINB(G)::QAR2(C)
        • B(c);N_GUARD::R1(E)
        • S(b);N_GUARD::QAR(C)+B(B)
      • Refutation
        • S(b);
  • Actual
    • R(E);
    • Threat
      • B(G)+P(D)
    • Vars
      • S(b);OGATE,P_SPINS(b),XB(B)::QAR1(C),XS(b)
      • R(g);N_GUARD,P_PINB(G)::R1(E)
      • B(c);N_GUARD::QAR2(C),XS(b)
      • S(b);N_GUARD::QAR(C)+B(B),XP(e)
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